Year	Percent
1950	0.93
1951	0.956
1952	1.015
1953	1.088
1954	1.164
1955	1.237
1956	1.298
1957	1.341
1958	1.363
1959	1.364
1960	1.351
1961	1.339
1962	1.343
1963	1.378
1964	1.441
1965	1.521
1966	1.599
1967	1.662
1968	1.703
1969	1.723
1970	1.735
1971	1.752
1972	1.777
1973	1.811
1974	1.854
1975	1.9
1976	1.947
1977	2.006
1978	2.087
1979	2.187
1980	2.296
1981	2.399
1982	2.484
1983	2.54
1984	2.569
1985	2.584
1986	2.598
1987	2.614
1988	2.631
1989	2.649
1990	2.668
1991	2.685
1992	2.701
1993	2.718
1994	2.737
1995	2.755
1996	2.774
1997	2.793
1998	2.813
1999	2.832
2000	2.85
2001	2.867
2002	2.887
2003	2.913
2004	2.943
2005	2.974
2006	3
2007	3.018
2008	3.026
2009	3.023
2010	3.014
2011	3.003
2012	2.989
2013	2.972
2014	2.951
2015	2.928
2016	2.903
2017	2.879
2018	2.856
2019	2.834
2020	2.811
2021	2.789
2022	2.766
2023	2.744
2024	2.723
2025	2.702
2026	2.68
2027	2.657
2028	2.633
2029	2.609
2030	2.583
2031	2.557
2032	2.53
2033	2.502
2034	2.474
2035	2.444
2036	2.414
2037	2.383
2038	2.352
2039	2.319
2040	2.286
2041	2.253
2042	2.22
2043	2.187
2044	2.153
2045	2.118
2046	2.085
2047	2.051
2048	2.02
2049	1.989
2050	1.959
2051	1.929
2052	1.899
2053	1.869
2054	1.839
2055	1.809
2056	1.779
2057	1.749
2058	1.72
2059	1.692
2060	1.664
2061	1.636
2062	1.609
2063	1.582
2064	1.555
2065	1.528
2066	1.501
2067	1.475
2068	1.448
2069	1.421
2070	1.394
2071	1.367
2072	1.34
2073	1.313
2074	1.287
2075	1.26
2076	1.233
2077	1.207
2078	1.181
2079	1.155
2080	1.129
2081	1.104
2082	1.079
2083	1.053
2084	1.027
2085	1.002
2086	0.976
2087	0.952
2088	0.927
2089	0.904
2090	0.881
2091	0.859
2092	0.836
2093	0.814
2094	0.792
2095	0.77
2096	0.749
2097	0.728
2098	0.708
2099	0.688