Year	Percent
1950	1.132
1951	1.459
1952	2.073
1953	2.6
1954	3.051
1955	3.448
1956	3.794
1957	4.109
1958	4.404
1959	4.666
1960	4.88
1961	5.015
1962	5.047
1963	4.955
1964	4.761
1965	4.526
1966	4.293
1967	4.022
1968	3.675
1969	3.272
1970	2.845
1971	2.444
1972	2.146
1973	2.001
1974	1.997
1975	2.065
1976	2.132
1977	2.184
1978	2.213
1979	2.22
1980	2.222
1981	2.231
1982	2.223
1983	2.163
1984	2.066
1985	1.943
1986	1.821
1987	1.736
1988	1.708
1989	1.738
1990	1.807
1991	1.876
1992	1.888
1993	1.801
1994	1.63
1995	1.411
1996	1.203
1997	1.093
1998	1.137
1999	1.332
2000	1.603
2001	1.856
2002	2.038
2003	2.117
2004	2.094
2005	2.021
2006	1.948
2007	1.877
2008	1.797
2009	1.713
2010	1.624
2011	1.529
2012	1.435
2013	1.343
2014	1.256
2015	1.172
2016	1.09
2017	1.019
2018	0.969
2019	0.937
2020	0.917
2021	0.9
2022	0.879
2023	0.852
2024	0.818
2025	0.783
2026	0.75
2027	0.719
2028	0.686
2029	0.652
2030	0.619
2031	0.587
2032	0.555
2033	0.525
2034	0.497
2035	0.471
2036	0.445
2037	0.42
2038	0.398
2039	0.379
2040	0.361
2041	0.345
2042	0.33
2043	0.316
2044	0.301
2045	0.289
2046	0.276
2047	0.263
2048	0.249
2049	0.234
2050	0.218
2051	0.202
2052	0.187
2053	0.173
2054	0.159
2055	0.145
2056	0.131
2057	0.118
2058	0.106
2059	0.094
2060	0.083
2061	0.071
2062	0.06
2063	0.048
2064	0.039
2065	0.029
2066	0.018
2067	0.008
2068	-0.001
2069	-0.012
2070	-0.022
2071	-0.032
2072	-0.042
2073	-0.05
2074	-0.06
2075	-0.068
2076	-0.076
2077	-0.084
2078	-0.091
2079	-0.099
2080	-0.105
2081	-0.111
2082	-0.117
2083	-0.121
2084	-0.125
2085	-0.128
2086	-0.13
2087	-0.133
2088	-0.134
2089	-0.134
2090	-0.134
2091	-0.135
2092	-0.135
2093	-0.136
2094	-0.136
2095	-0.136
2096	-0.137
2097	-0.139
2098	-0.14
2099	-0.143