Year	annual %
1961	2.60451812442641
1962	2.62194328950544
1963	2.63622185854676
1964	2.63446301996047
1965	2.60288990692825
1966	2.54584507652474
1967	2.48454765543641
1968	2.42712134718019
1969	2.3552253036218
1970	2.28580621281616
1971	2.20084374364208
1972	2.15569390488142
1973	2.15118273081426
1974	2.15754030492084
1975	2.20385542788772
1976	2.22762179469207
1977	2.31431888791727
1978	2.43281978499526
1979	2.50775131645115
1980	2.5842718504091
1981	2.59696781360793
1982	2.61383660122245
1983	2.7077568266867
1984	2.7550977467662
1985	2.75444121792758
1986	2.73714675819797
1987	2.71823653037365
1988	2.72021662533725
1989	2.66659415952819
1990	2.5648085572032
1991	2.41133033369101
1992	2.32406409289331
1993	2.29563116641862
1994	2.24505067418641
1995	2.19172285065762
1996	2.15573650351395
1997	2.15540119420392
1998	2.14462708535911
1999	2.11332015702818
2000	2.07183470577985
2001	2.0564198428314
2002	2.09110329331686
2003	2.08785646198219
2004	2.03166566101876
2005	1.98334143708702
2006	1.94660064062847
2007	1.95167431348286
2008	1.95838290327697
2009	1.95615522230144
2010	2.02763965508429
2011	2.20764281063758
2012	2.26158734403113
2013	2.31570750353087
2014	2.34379305041137
2015	2.20525980686911
2016	2.08630284573945
2017	1.98976849465685
2018	1.89893076814734
2019	1.79400212546566
2020	1.73312957205986
2021	1.65838367949689
2022	1.56907383039584
2023	1.54356509805617