Year	annual %
1961	1.467026683040117
1962	1.4605823883963518
1963	1.4115643173557497
1964	1.4757943418317063
1965	1.5842030994761644
1966	1.6490349840347949
1967	1.7181971685530286
1968	1.776948690475882
1969	1.8617036517499117
1970	1.9519996592259343
1971	2.260284204419066
1972	2.340413724433594
1973	2.401226266268983
1974	2.4560337911670547
1975	2.5370386485336978
1976	2.6163488370344226
1977	2.688945567620847
1978	2.748783239793447
1979	2.8418901039924336
1980	2.9501086824421714
1981	3.0348304463481437
1982	3.101618090633683
1983	3.1857634045210097
1984	3.267734482753953
1985	3.33269534302212
1986	3.274841224551491
1987	3.214458321851453
1988	3.2280177567009654
1989	3.1705957413921975
1990	3.1432139361103193
1991	3.111189894902622
1992	3.0706560612077562
1993	3.0238952420838308
1994	2.936900365111345
1995	2.7769325312793
1996	2.480404448651679
1997	2.2777939556789355
1998	2.2095467972825387
1999	2.153608512745362
2000	2.102736892117176
2001	2.0180139262450174
2002	1.9420415692672526
2003	1.9134675266783523
2004	1.9091876808062562
2005	2.0277032414777283
2006	2.2005956654281436
2007	2.2288631213924277
2008	2.1757869004387254
2009	2.1266464241669567
2010	2.080038280292556
2011	2.0484655161055074
2012	2.010916515848148
2013	1.9587421478484919
2014	1.8948004452600027
2015	1.779007976839572
2016	1.6710513479503994
2017	1.596893516784319
2018	1.5031739344044728
2019	1.4252893407497544
2020	1.29296541480667
2021	1.1049677210048705
2022	1.094448249863739
2023	1.1476677229061354