Year	Percent
1950	2.634
1951	2.651
1952	2.686
1953	2.723
1954	2.763
1955	2.802
1956	2.84
1957	2.876
1958	2.909
1959	2.938
1960	2.963
1961	2.982
1962	2.996
1963	3.003
1964	3.004
1965	2.997
1966	2.982
1967	2.963
1968	2.944
1969	2.922
1970	2.898
1971	2.867
1972	2.817
1973	2.737
1974	2.631
1975	2.514
1976	2.399
1977	2.294
1978	2.198
1979	2.114
1980	2.032
1981	1.948
1982	1.877
1983	1.834
1984	1.815
1985	1.814
1986	1.814
1987	1.776
1988	1.668
1989	1.498
1990	1.294
1991	1.097
1992	0.957
1993	0.911
1994	0.956
1995	1.05
1996	1.14
1997	1.188
1998	1.172
1999	1.093
2000	0.983
2001	0.878
2002	0.79
2003	0.72
2004	0.67
2005	0.628
2006	0.585
2007	0.545
2008	0.516
2009	0.496
2010	0.482
2011	0.47
2012	0.452
2013	0.42
2014	0.376
2015	0.325
2016	0.276
2017	0.232
2018	0.194
2019	0.164
2020	0.138
2021	0.113
2022	0.088
2023	0.066
2024	0.046
2025	0.028
2026	0.011
2027	-0.007
2028	-0.025
2029	-0.046
2030	-0.067
2031	-0.088
2032	-0.11
2033	-0.133
2034	-0.158
2035	-0.184
2036	-0.211
2037	-0.237
2038	-0.264
2039	-0.29
2040	-0.317
2041	-0.343
2042	-0.369
2043	-0.395
2044	-0.421
2045	-0.446
2046	-0.471
2047	-0.495
2048	-0.518
2049	-0.539
2050	-0.56
2051	-0.579
2052	-0.597
2053	-0.612
2054	-0.625
2055	-0.636
2056	-0.646
2057	-0.654
2058	-0.66
2059	-0.664
2060	-0.667
2061	-0.668
2062	-0.669
2063	-0.669
2064	-0.668
2065	-0.667
2066	-0.666
2067	-0.663
2068	-0.66
2069	-0.657
2070	-0.653
2071	-0.648
2072	-0.645
2073	-0.642
2074	-0.64
2075	-0.639
2076	-0.638
2077	-0.637
2078	-0.637
2079	-0.637
2080	-0.637
2081	-0.638
2082	-0.639
2083	-0.64
2084	-0.641
2085	-0.642
2086	-0.643
2087	-0.643
2088	-0.642
2089	-0.641
2090	-0.639
2091	-0.636
2092	-0.632
2093	-0.628
2094	-0.623
2095	-0.616
2096	-0.608
2097	-0.599
2098	-0.588
2099	-0.576