Year	Percent
1950	1.069
1951	1.08
1952	1.099
1953	1.114
1954	1.124
1955	1.131
1956	1.134
1957	1.132
1958	1.126
1959	1.118
1960	1.11
1961	1.105
1962	1.109
1963	1.124
1964	1.152
1965	1.186
1966	1.222
1967	1.27
1968	1.342
1969	1.434
1970	1.538
1971	1.64
1972	1.721
1973	1.765
1974	1.775
1975	1.762
1976	1.744
1977	1.747
1978	1.787
1979	1.859
1980	1.957
1981	2.055
1982	2.094
1983	2.029
1984	1.874
1985	1.671
1986	1.484
1987	1.398
1988	1.476
1989	1.709
1990	2.022
1991	2.326
1992	2.551
1993	2.663
1994	2.668
1995	2.621
1996	2.585
1997	2.59
1998	2.646
1999	2.75
2000	2.868
2001	2.97
2002	3.056
2003	3.134
2004	3.201
2005	3.261
2006	3.313
2007	3.331
2008	3.293
2009	3.208
2010	3.1
2011	2.998
2012	2.927
2013	2.901
2014	2.918
2015	2.953
2016	2.984
2017	3
2018	3.001
2019	2.987
2020	2.966
2021	2.946
2022	2.929
2023	2.913
2024	2.9
2025	2.886
2026	2.871
2027	2.852
2028	2.831
2029	2.808
2030	2.782
2031	2.755
2032	2.727
2033	2.696
2034	2.663
2035	2.629
2036	2.593
2037	2.557
2038	2.519
2039	2.48
2040	2.441
2041	2.401
2042	2.361
2043	2.321
2044	2.281
2045	2.241
2046	2.202
2047	2.163
2048	2.126
2049	2.09
2050	2.056
2051	2.021
2052	1.987
2053	1.952
2054	1.918
2055	1.884
2056	1.85
2057	1.817
2058	1.784
2059	1.753
2060	1.722
2061	1.691
2062	1.66
2063	1.628
2064	1.597
2065	1.566
2066	1.535
2067	1.503
2068	1.472
2069	1.44
2070	1.408
2071	1.377
2072	1.345
2073	1.314
2074	1.283
2075	1.253
2076	1.223
2077	1.193
2078	1.163
2079	1.133
2080	1.103
2081	1.073
2082	1.044
2083	1.015
2084	0.986
2085	0.958
2086	0.93
2087	0.902
2088	0.876
2089	0.849
2090	0.824
2091	0.799
2092	0.774
2093	0.749
2094	0.725
2095	0.701
2096	0.677
2097	0.654
2098	0.631
2099	0.609