Does anyone have (a perferably free) source for inflation adjusted book per share? Or just quarterly book per share?

Here are the unadjusted figures and the CPI figures I have.
Better to adjust them yourself, since you probably want to multiply by whatever CPI is the day you do it.

The CPI figure is the most recent KNOWN figure at the end of the fiscal period.
Some of the early book figures are approximate. I think I used annuals and interpolated the March, June and September figures. And even the early annual figures are back converted from rounded annual growth figures.

But you won't get much in the way of reasonable results on the extremely old figures anyway. The rate of growth of value per share had a big kink in 1998 on the acquisition of General Re, but has been pretty constant since then. The valuation multiples were crazy till 1999, a dip in 2000, a little high 2001-2007, and in a relatively bounded range 2008 to date. You can get pretty good (numerically stable) analysis starting around 2003.

These are of course the figures for A shares. B shares are 1/1500 the economic value.

period end    release date    book       CPI
1989-12-31    1990-02-26        4,293    126.10
1990-03-31    1990-04-28        4,163    128.70
1990-06-30    1990-07-28        4,671    129.90
1990-09-30    1990-10-28        4,229    132.70
1990-12-31    1991-02-26        4,611    133.80
1991-03-31    1991-04-28        5,289    135.00
1991-06-30    1991-07-28        5,458    136.00
1991-09-30    1991-10-28        5,940    137.20
1991-12-31    1992-02-26        6,437    137.90
1992-03-31    1992-04-28        6,275    139.30
1992-06-30    1992-07-28        6,763    140.20
1992-09-30    1992-10-28        7,356    140.90
1992-12-31    1993-02-26        7,743    142.00
1993-03-31    1993-04-28        8,079    143.10
1993-06-30    1993-07-28        8,280    144.20
1993-09-30    1993-10-28        8,675    144.80
1993-12-31    1994-02-26        8,851    145.80
1994-03-31    1994-04-28        8,521    146.70
1994-06-30    1994-07-28        9,104    147.50
1994-09-30    1994-10-28       10,148    149.00
1994-12-31    1995-02-26       10,081    149.70
1995-03-31    1995-04-28       11,155    150.90
1995-06-30    1995-07-28       12,233    152.20
1995-09-30    1995-10-28       13,271    152.90
1995-12-31    1996-02-26       14,025    153.60
1996-03-31    1996-04-28       15,180    154.90
1996-06-30    1996-07-28       16,528    156.60
1996-09-30    1996-10-28       17,500    157.30
1996-12-31    1997-02-26       19,011    158.60
1997-03-31    1997-04-28       19,631    159.60
1997-06-30    1997-07-28       22,732    160.10
1997-09-30    1997-10-28       22,694    160.80
1997-12-31    1998-02-26       25,488    161.50
1998-03-31    1998-04-28       28,021    161.90
1998-06-30    1998-07-28       29,743    162.80
1998-09-30    1998-10-28       24,838    163.40
1998-12-31    1999-02-26       37,801    164.00
1999-03-31    1999-04-28       38,097    164.50
1999-06-30    1999-07-28       38,189    166.20
1999-09-30    1999-10-28       36,384    167.10
1999-12-31    2000-03-11       37,987    168.30
2000-03-31    2000-04-28       37,013    169.70
2000-06-30    2000-07-28       37,853    171.30
2000-09-30    2000-10-28       38,934    172.80
2000-12-31    2001-03-10       40,442    174.10
2001-03-31    2001-04-28       38,241    175.80
2001-06-30    2001-07-28       38,458    177.70
2001-09-30    2001-10-28       37,387    177.50
2001-12-31    2002-03-09       37,920    177.40
2002-03-31    2002-04-28       39,452    177.80
2002-06-30    2002-07-28       40,660    179.80
2002-09-30    2002-10-28       40,814    180.50
2002-12-31    2003-03-08       41,727    181.30
2003-03-31    2003-04-28       42,580    183.10
2003-06-30    2003-07-28       45,987    183.50
2003-09-30    2003-10-28       46,860    184.60
2003-12-31    2004-03-06       50,498    184.50
2004-03-31    2004-04-28       51,855    186.20
2004-06-30    2004-07-28       52,307    189.10
2004-09-30    2004-10-28       52,456    189.50
2004-12-31    2005-03-05       55,824    191.00
2005-03-31    2005-04-28       56,159    191.80
2005-06-30    2005-07-28       57,208    194.40
2005-09-30    2005-10-28       58,127    196.40
2005-12-31    2006-03-04       59,377    197.60
2006-03-31    2006-04-28       61,863    198.70
2006-06-30    2006-07-28       63,301    202.50
2006-09-30    2006-10-28       66,292    203.90
2006-12-31    2007-03-01       70,281    201.50
2007-03-31    2007-04-28       71,221    203.50
2007-06-30    2007-07-28       74,499    207.90
2007-09-30    2007-10-28       77,482    207.90
2007-12-31    2008-03-01       78,008    210.20
2008-03-31    2008-04-28       77,072    211.70
2008-06-30    2008-07-28       76,163    216.60
2008-09-30    2008-10-28       77,558    219.10
2008-12-31    2009-02-28       70,530    212.40
2009-03-31    2009-05-04       66,248    212.20
2009-06-30    2009-07-31       73,806    213.90
2009-09-30    2009-10-29       81,247    215.40
2009-12-31    2010-02-27       84,487    216.30
2010-03-31    2010-04-30       89,374    216.70
2010-06-30    2010-07-30       86,661    218.20
2010-09-30    2010-10-29       90,823    218.30
2010-12-31    2011-02-26       95,453    218.80
2011-03-31    2011-04-29       97,081    221.30
2011-06-30    2011-07-28       98,716    226.00
2011-09-30    2011-10-28       96,876    226.50
2011-12-31    2012-02-25       99,860    226.20
2012-03-31    2012-04-27      106,588    227.70
2012-06-30    2012-07-26      107,377    229.80
2012-09-30    2012-10-25      111,718    230.40
2012-12-31    2013-03-02      114,214    230.20
2013-03-31    2013-05-03      120,519    232.20
2013-06-30    2013-07-25      122,898    232.90
2013-09-30    2013-10-24      126,764    233.90
2013-12-31    2014-03-01      134,973    233.10
2014-03-31    2014-04-24      138,420    234.80
2014-06-30    2014-08-01      142,481    237.90
2014-09-30    2014-11-07      144,540    237.90
2014-12-31    2015-02-28      146,186    236.20
2015-03-31    2015-04-24      146,959    234.70
2015-06-30    2015-08-07      149,697    237.80
2015-09-30    2015-11-08      151,085    237.90
2015-12-31    2016-02-27      155,501    237.30
2016-03-31    2016-05-07      157,329    237.10
2016-06-30    2016-08-05      160,009    240.20
2016-09-30    2016-11-04      163,782    240.90
2016-12-31    2017-02-25      172,108    241.40
2017-03-31    2017-05-05      178,071    243.60
2017-06-30    2017-08-05      182,814    244.70
2017-09-30    2017-11-04      187,427    245.50
2017-12-31    2018-02-24      211,750    246.70
2018-03-31    2018-05-05      211,178    249.00
2018-06-30    2018-08-04      217,675    251.60
2018-09-30    2018-11-03      228,794    252.15
2018-12-31    2019-02-23      212,497    252.04
2019-03-31    2019-05-04      225,575    252.78
2019-06-30    2019-08-03      234,109    256.09
2019-09-30    2019-11-02      243,927    256.60
2019-12-31    2020-02-22      261,417    257.21
2020-03-31    2020-05-02      229,358    258.68
2020-06-30    2020-08-08      245,836    256.39
2020-09-30    2020-11-07      264,323    259.90
2020-12-31    2021-02-27      287,031    260.23
2021-03-31    2021-05-01      293,636    263.00
2021-06-30    2021-08-07      311,276    269.20
2021-09-30    2021-11-06      316,443    273.60
2021-12-31    2022-02-26      342,621    277.95
2022-03-31    2022-04-30      345,469    283.72
2022-06-30    2022-08-06      314,090    292.30
2022-09-30    2022-11-05      310,652    296.17
2022-12-31    2023-02-25      311,995    299.60
2023-03-31    2023-05-07      347,932    300.84
2023-06-30    2023-08-05      372,966    304.10
2023-09-30    2023-11-04      363,413    307.03
2023-12-31    2024-02-24      389,372    307.05
2024-03-31    2024-05-04      397,627    310.33
2024-06-30    2024-08-03      418,806    314.10
2024-09-30    2024-11-02      437,580    314.80
2024-12-31    2025-02-22      451,507    315.49
2025-03-31    2025-05-03      455,055    319.10

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