Year	Percent
1950	2.398
1951	2.269
1952	2.003
1953	1.733
1954	1.481
1955	1.268
1956	1.115
1957	1.038
1958	1.048
1959	1.141
1960	1.291
1961	1.453
1962	1.568
1963	1.592
1964	1.528
1965	1.418
1966	1.315
1967	1.258
1968	1.269
1969	1.344
1970	1.455
1971	1.56
1972	1.62
1973	1.607
1974	1.528
1975	1.408
1976	1.285
1977	1.216
1978	1.238
1979	1.344
1980	1.499
1981	1.644
1982	1.702
1983	1.62
1984	1.409
1985	1.13
1986	0.861
1987	0.669
1988	0.594
1989	0.637
1990	0.741
1991	0.841
1992	0.914
1993	0.958
1994	0.968
1995	0.964
1996	0.964
1997	0.954
1998	0.92
1999	0.864
2000	0.793
2001	0.721
2002	0.659
2003	0.614
2004	0.589
2005	0.574
2006	0.558
2007	0.538
2008	0.513
2009	0.483
2010	0.451
2011	0.42
2012	0.393
2013	0.37
2014	0.352
2015	0.335
2016	0.319
2017	0.3
2018	0.277
2019	0.249
2020	0.22
2021	0.19
2022	0.159
2023	0.129
2024	0.099
2025	0.068
2026	0.036
2027	0.004
2028	-0.027
2029	-0.057
2030	-0.088
2031	-0.118
2032	-0.15
2033	-0.183
2034	-0.22
2035	-0.257
2036	-0.295
2037	-0.33
2038	-0.363
2039	-0.393
2040	-0.422
2041	-0.449
2042	-0.477
2043	-0.505
2044	-0.532
2045	-0.56
2046	-0.587
2047	-0.612
2048	-0.636
2049	-0.657
2050	-0.678
2051	-0.698
2052	-0.719
2053	-0.741
2054	-0.765
2055	-0.79
2056	-0.815
2057	-0.84
2058	-0.867
2059	-0.896
2060	-0.925
2061	-0.955
2062	-0.985
2063	-1.014
2064	-1.042
2065	-1.07
2066	-1.097
2067	-1.125
2068	-1.153
2069	-1.18
2070	-1.207
2071	-1.234
2072	-1.261
2073	-1.286
2074	-1.311
2075	-1.336
2076	-1.36
2077	-1.383
2078	-1.406
2079	-1.428
2080	-1.449
2081	-1.47
2082	-1.489
2083	-1.506
2084	-1.522
2085	-1.537
2086	-1.55
2087	-1.562
2088	-1.572
2089	-1.58
2090	-1.587
2091	-1.593
2092	-1.597
2093	-1.601
2094	-1.605
2095	-1.607
2096	-1.609
2097	-1.61
2098	-1.61
2099	-1.609