Year	Percent
1950	1.889
1951	1.951
1952	2.071
1953	2.185
1954	2.29
1955	2.383
1956	2.462
1957	2.526
1958	2.574
1959	2.607
1960	2.629
1961	2.643
1962	2.656
1963	2.672
1964	2.69
1965	2.706
1966	2.716
1967	2.716
1968	2.707
1969	2.689
1970	2.666
1971	2.639
1972	2.611
1973	2.578
1974	2.543
1975	2.504
1976	2.462
1977	2.423
1978	2.393
1979	2.369
1980	2.348
1981	2.324
1982	2.287
1983	2.231
1984	2.157
1985	2.075
1986	1.995
1987	1.922
1988	1.859
1989	1.806
1990	1.759
1991	1.714
1992	1.668
1993	1.619
1994	1.567
1995	1.516
1996	1.468
1997	1.43
1998	1.406
1999	1.396
2000	1.393
2001	1.391
2002	1.388
2003	1.384
2004	1.379
2005	1.373
2006	1.365
2007	1.357
2008	1.345
2009	1.33
2010	1.313
2011	1.294
2012	1.271
2013	1.24
2014	1.202
2015	1.159
2016	1.116
2017	1.076
2018	1.039
2019	1.007
2020	0.977
2021	0.947
2022	0.916
2023	0.884
2024	0.853
2025	0.822
2026	0.791
2027	0.761
2028	0.732
2029	0.705
2030	0.677
2031	0.651
2032	0.624
2033	0.597
2034	0.57
2035	0.543
2036	0.517
2037	0.491
2038	0.465
2039	0.44
2040	0.416
2041	0.392
2042	0.368
2043	0.344
2044	0.319
2045	0.295
2046	0.272
2047	0.249
2048	0.227
2049	0.206
2050	0.186
2051	0.166
2052	0.147
2053	0.129
2054	0.112
2055	0.095
2056	0.079
2057	0.063
2058	0.049
2059	0.035
2060	0.021
2061	0.009
2062	-0.003
2063	-0.014
2064	-0.025
2065	-0.034
2066	-0.043
2067	-0.052
2068	-0.061
2069	-0.07
2070	-0.079
2071	-0.088
2072	-0.096
2073	-0.105
2074	-0.113
2075	-0.121
2076	-0.129
2077	-0.137
2078	-0.144
2079	-0.152
2080	-0.159
2081	-0.167
2082	-0.174
2083	-0.181
2084	-0.187
2085	-0.194
2086	-0.2
2087	-0.206
2088	-0.212
2089	-0.218
2090	-0.224
2091	-0.23
2092	-0.235
2093	-0.24
2094	-0.244
2095	-0.248
2096	-0.252
2097	-0.255
2098	-0.257
2099	-0.26