Year	annual %
1961	2.95875148188143
1962	3.00872757315641
1963	3.04424806174107
1964	3.049988722361
1965	3.02848416746145
1966	2.9995281477782
1967	2.96279167966321
1968	2.917545238658
1969	2.87059232623213
1970	2.82432415121711
1971	2.78914823745504
1972	2.75652408467976
1973	2.70443962607396
1974	2.6428039388625
1975	2.58074921477959
1976	2.51362655645503
1977	2.44913735884331
1978	2.39369188852079
1979	2.35520304201467
1980	2.33535160087889
1981	2.32859411609936
1982	2.32682869648968
1983	2.32620535634175
1984	2.31179026190356
1985	2.27821488840633
1986	2.2455812767976
1987	2.21262930745239
1988	2.1783179359972
1989	2.13704703410189
1990	2.12168289397178
1991	2.10330345744965
1992	2.0702317907685
1993	2.05812086545799
1994	2.0455139596654
1995	2.03382140422601
1996	2.02420575607707
1997	2.01399835927176
1998	2.00193307218632
1999	1.9883993241869
2000	1.97188791278722
2001	1.95603782398984
2002	1.94007586747458
2003	1.92364701840572
2004	1.92079922199436
2005	1.91043496107333
2006	1.87901413538404
2007	1.85414918870892
2008	1.8381638086969
2009	1.81636347456987
2010	1.78967209984493
2011	1.77943456083626
2012	1.77844896646925
2013	1.76061359830409
2014	1.74411571812086
2015	1.74123543377264
2016	1.73456002172234
2017	1.71694872170027
2018	1.67512297561619
2019	1.60228973055272
2020	1.4510521369147
2021	1.3156150150044
2022	1.30858019134362
2023	1.34074838442305