Year	Percent
1950	0.09
1951	0.128
1952	0.151
1953	0.091
1954	-0.017
1955	-0.13
1956	-0.209
1957	-0.217
1958	-0.13
1959	0.053
1960	0.306
1961	0.558
1962	0.719
1963	0.718
1964	0.559
1965	0.315
1966	0.076
1967	-0.098
1968	-0.17
1969	-0.139
1970	-0.052
1971	0.036
1972	0.121
1973	0.213
1974	0.306
1975	0.402
1976	0.502
1977	0.601
1978	0.69
1979	0.767
1980	0.837
1981	0.902
1982	0.948
1983	0.964
1984	0.949
1985	0.915
1986	0.879
1987	0.85
1988	0.836
1989	0.837
1990	0.843
1991	0.845
1992	0.844
1993	0.851
1994	0.865
1995	0.881
1996	0.896
1997	0.89
1998	0.848
1999	0.77
2000	0.675
2001	0.581
2002	0.506
2003	0.459
2004	0.441
2005	0.437
2006	0.433
2007	0.434
2008	0.451
2009	0.481
2010	0.519
2011	0.559
2012	0.58
2013	0.565
2014	0.514
2015	0.444
2016	0.375
2017	0.317
2018	0.279
2019	0.262
2020	0.256
2021	0.249
2022	0.234
2023	0.208
2024	0.174
2025	0.137
2026	0.101
2027	0.063
2028	0.024
2029	-0.016
2030	-0.059
2031	-0.1
2032	-0.137
2033	-0.17
2034	-0.196
2035	-0.216
2036	-0.235
2037	-0.253
2038	-0.266
2039	-0.274
2040	-0.281
2041	-0.288
2042	-0.291
2043	-0.291
2044	-0.288
2045	-0.284
2046	-0.279
2047	-0.273
2048	-0.269
2049	-0.264
2050	-0.259
2051	-0.256
2052	-0.253
2053	-0.251
2054	-0.252
2055	-0.255
2056	-0.257
2057	-0.261
2058	-0.268
2059	-0.277
2060	-0.286
2061	-0.297
2062	-0.311
2063	-0.324
2064	-0.338
2065	-0.354
2066	-0.37
2067	-0.385
2068	-0.4
2069	-0.414
2070	-0.427
2071	-0.439
2072	-0.45
2073	-0.458
2074	-0.461
2075	-0.463
2076	-0.465
2077	-0.463
2078	-0.46
2079	-0.455
2080	-0.45
2081	-0.441
2082	-0.43
2083	-0.422
2084	-0.411
2085	-0.397
2086	-0.384
2087	-0.371
2088	-0.357
2089	-0.344
2090	-0.331
2091	-0.317
2092	-0.305
2093	-0.294
2094	-0.282
2095	-0.272
2096	-0.263
2097	-0.255
2098	-0.25
2099	-0.246