Year	Percent
1950	1.648
1951	1.701
1952	1.783
1953	1.826
1954	1.842
1955	1.843
1956	1.84
1957	1.843
1958	1.856
1959	1.883
1960	1.919
1961	1.954
1962	1.973
1963	1.968
1964	1.941
1965	1.899
1966	1.857
1967	1.851
1968	1.907
1969	2.019
1970	2.162
1971	2.3
1972	2.379
1973	2.36
1974	2.256
1975	2.114
1976	1.991
1977	1.921
1978	1.922
1979	1.994
1980	2.098
1981	2.202
1982	2.32
1983	2.471
1984	2.646
1985	2.835
1986	3.016
1987	3.154
1988	3.222
1989	3.229
1990	3.206
1991	3.188
1992	3.193
1993	3.225
1994	3.285
1995	3.348
1996	3.399
1997	3.455
1998	3.533
1999	3.624
2000	3.72
2001	3.802
2002	3.833
2003	3.787
2004	3.677
2005	3.536
2006	3.402
2007	3.306
2008	3.265
2009	3.274
2010	3.304
2011	3.327
2012	3.325
2013	3.291
2014	3.228
2015	3.153
2016	3.082
2017	3.023
2018	2.978
2019	2.946
2020	2.921
2021	2.894
2022	2.864
2023	2.832
2024	2.797
2025	2.76
2026	2.725
2027	2.69
2028	2.655
2029	2.621
2030	2.586
2031	2.552
2032	2.517
2033	2.483
2034	2.448
2035	2.414
2036	2.38
2037	2.346
2038	2.312
2039	2.279
2040	2.245
2041	2.211
2042	2.178
2043	2.145
2044	2.111
2045	2.078
2046	2.045
2047	2.013
2048	1.981
2049	1.949
2050	1.918
2051	1.887
2052	1.856
2053	1.825
2054	1.795
2055	1.765
2056	1.735
2057	1.706
2058	1.676
2059	1.647
2060	1.618
2061	1.589
2062	1.56
2063	1.532
2064	1.503
2065	1.474
2066	1.445
2067	1.417
2068	1.388
2069	1.359
2070	1.331
2071	1.302
2072	1.274
2073	1.247
2074	1.219
2075	1.192
2076	1.166
2077	1.139
2078	1.112
2079	1.086
2080	1.059
2081	1.033
2082	1.007
2083	0.982
2084	0.956
2085	0.931
2086	0.907
2087	0.882
2088	0.858
2089	0.834
2090	0.811
2091	0.788
2092	0.765
2093	0.743
2094	0.721
2095	0.699
2096	0.677
2097	0.655
2098	0.634
2099	0.614