Year	Percent
1950	1.166
1951	1.152
1952	1.092
1953	0.98
1954	0.839
1955	0.692
1956	0.562
1957	0.467
1958	0.421
1959	0.428
1960	0.473
1961	0.523
1962	0.537
1963	0.479
1964	0.353
1965	0.187
1966	0.029
1967	-0.067
1968	-0.06
1969	0.05
1970	0.213
1971	0.373
1972	0.5
1973	0.584
1974	0.618
1975	0.632
1976	0.645
1977	0.629
1978	0.552
1979	0.418
1980	0.249
1981	0.078
1982	-0.055
1983	-0.119
1984	-0.111
1985	-0.064
1986	-0.018
1987	0.018
1988	0.041
1989	0.048
1990	0.051
1991	0.059
1992	0.059
1993	0.038
1994	-0.002
1995	-0.052
1996	-0.096
1997	-0.131
1998	-0.155
1999	-0.164
2000	-0.172
2001	-0.181
2002	-0.156
2003	-0.063
2004	0.092
2005	0.286
2006	0.477
2007	0.606
2008	0.625
2009	0.537
2010	0.389
2011	0.239
2012	0.122
2013	0.056
2014	0.044
2015	0.059
2016	0.069
2017	0.067
2018	0.058
2019	0.038
2020	0.015
2021	-0.005
2022	-0.025
2023	-0.048
2024	-0.073
2025	-0.099
2026	-0.125
2027	-0.15
2028	-0.173
2029	-0.195
2030	-0.216
2031	-0.235
2032	-0.251
2033	-0.261
2034	-0.265
2035	-0.265
2036	-0.263
2037	-0.26
2038	-0.254
2039	-0.246
2040	-0.237
2041	-0.227
2042	-0.217
2043	-0.21
2044	-0.204
2045	-0.2
2046	-0.197
2047	-0.196
2048	-0.198
2049	-0.204
2050	-0.211
2051	-0.22
2052	-0.231
2053	-0.244
2054	-0.259
2055	-0.276
2056	-0.293
2057	-0.31
2058	-0.328
2059	-0.346
2060	-0.363
2061	-0.38
2062	-0.394
2063	-0.405
2064	-0.412
2065	-0.416
2066	-0.418
2067	-0.417
2068	-0.412
2069	-0.402
2070	-0.389
2071	-0.375
2072	-0.358
2073	-0.34
2074	-0.32
2075	-0.3
2076	-0.278
2077	-0.257
2078	-0.237
2079	-0.218
2080	-0.2
2081	-0.182
2082	-0.166
2083	-0.152
2084	-0.141
2085	-0.132
2086	-0.124
2087	-0.117
2088	-0.111
2089	-0.107
2090	-0.105
2091	-0.103
2092	-0.103
2093	-0.103
2094	-0.104
2095	-0.106
2096	-0.109
2097	-0.113
2098	-0.117
2099	-0.122