Year	annual %
1961	2.93623451796321
1962	2.93614231904841
1963	2.92221307734071
1964	2.89336048705939
1965	2.85049353730504
1966	2.80442018526419
1967	2.74453684653474
1968	2.67150910396167
1969	2.58968156700276
1970	2.50766321207739
1971	2.43323765079528
1972	2.37246485855517
1973	2.32620371922535
1974	2.29212231161545
1975	2.25734797201249
1976	2.23911459052053
1977	2.25016097253785
1978	2.30078376223338
1979	2.38916672626313
1980	2.49465435437886
1981	2.59069154291441
1982	2.67176606345182
1983	2.71559914034248
1984	2.73968844818146
1985	2.75409483924612
1986	2.76317062575419
1987	2.76856424602669
1988	2.76824690553245
1989	2.75932199526975
1990	2.7344725274704
1991	2.68942960064747
1992	2.62466867420162
1993	2.55062347651691
1994	2.49055887242206
1995	2.45298879260223
1996	2.40272092118981
1997	2.35805923280234
1998	2.36198748317176
1999	2.36947641185089
2000	2.43394364463754
2001	2.40240090043075
2002	2.29788241650457
2003	2.18074524550455
2004	2.12598597102736
2005	2.07717063066365
2006	2.02622809680574
2007	1.97596216713401
2008	1.92744763752889
2009	1.88106343818981
2010	1.83655642844003
2011	1.81948775605672
2012	1.77749578673149
2013	1.75716769812924
2014	1.72875760277972
2015	1.69146509302391
2016	1.65807331834237
2017	1.62765379973835
2018	1.60038598150372
2019	1.56038604781094
2020	1.51998785357799
2021	1.4803168061015
2022	1.43986849494773
2023	1.39900898821501