Year	annual %
1961	1.2330632161981327
1962	1.2435033350890308
1963	1.2189962248452275
1964	1.203532866181689
1965	1.1588106193225514
1966	1.026260831854728
1967	0.9785369147782035
1968	0.9599787368788526
1969	0.9624136714015492
1970	0.9470106273448096
1971	1.1010533998477428
1972	0.964204962252154
1973	0.9263463902444045
1974	0.9033289764904566
1975	0.874728195876969
1976	0.8285134403853647
1977	0.8136527003123888
1978	0.8110706446144746
1979	0.8308259397407767
1980	0.8034488869658674
1981	0.7866857654443322
1982	0.7356717206732384
1983	0.6808557996363476
1984	0.6615353193429456
1985	0.6639935704469337
1986	0.6710553080038011
1987	0.6786868048310453
1988	0.6846695811868528
1989	0.7063565962780842
1990	0.6322237492385909
1991	0.7358282163118162
1992	0.7254531560571422
1993	0.6660368708638771
1994	0.6152697302179035
1995	0.5820798549373194
1996	0.571067884899179
1997	0.5542134695238303
1998	0.5358850312107961
1999	0.5089615528828091
2000	0.48321875563776473
2001	0.4733041625668619
2002	0.4726510287465828
2003	0.4817699152469288
2004	0.5032845819108474
2005	0.5309852300272127
2006	0.6212325629693112
2007	0.6928728419707681
2008	0.728033312532034
2009	0.6582137093139124
2010	0.5597299420839477
2011	0.38588189727759925
2012	0.5153837528682743
2013	0.5333455493169907
2014	0.5375818959470138
2015	0.5246539991749586
2016	0.5302497997941913
2017	0.4675712318310161
2018	0.437335825970365
2019	0.37695160728401333
2020	0.3440006191485878
2021	-0.07077092532171037
2022	0.21363990896601592
2023	0.5072650000685712