Year	Percent
1950	1.28
1951	1.26
1952	1.288
1953	1.416
1954	1.585
1955	1.733
1956	1.806
1957	1.76
1958	1.569
1959	1.24
1960	0.823
1961	0.414
1962	0.132
1963	0.081
1964	0.263
1965	0.574
1966	0.882
1967	1.114
1968	1.236
1969	1.248
1970	1.202
1971	1.158
1972	1.135
1973	1.129
1974	1.14
1975	1.169
1976	1.199
1977	1.181
1978	1.076
1979	0.895
1980	0.669
1981	0.457
1982	0.355
1983	0.433
1984	0.688
1985	1.037
1986	1.38
1987	1.666
1988	1.876
1989	2.005
1990	2.092
1991	2.169
1992	2.224
1993	2.229
1994	2.189
1995	2.123
1996	2.05
1997	1.98
1998	1.918
1999	1.868
2000	1.815
2001	1.754
2002	1.704
2003	1.683
2004	1.687
2005	1.707
2006	1.724
2007	1.695
2008	1.59
2009	1.415
2010	1.204
2011	0.999
2012	0.84
2013	0.754
2014	0.741
2015	0.767
2016	0.793
2017	0.804
2018	0.794
2019	0.762
2020	0.722
2021	0.686
2022	0.657
2023	0.633
2024	0.613
2025	0.596
2026	0.579
2027	0.562
2028	0.546
2029	0.531
2030	0.516
2031	0.502
2032	0.489
2033	0.476
2034	0.464
2035	0.452
2036	0.44
2037	0.428
2038	0.415
2039	0.401
2040	0.385
2041	0.37
2042	0.355
2043	0.339
2044	0.323
2045	0.306
2046	0.289
2047	0.272
2048	0.252
2049	0.232
2050	0.21
2051	0.188
2052	0.168
2053	0.149
2054	0.131
2055	0.114
2056	0.097
2057	0.082
2058	0.066
2059	0.051
2060	0.038
2061	0.024
2062	0.011
2063	-0.002
2064	-0.015
2065	-0.028
2066	-0.04
2067	-0.052
2068	-0.064
2069	-0.076
2070	-0.087
2071	-0.098
2072	-0.109
2073	-0.119
2074	-0.129
2075	-0.139
2076	-0.149
2077	-0.157
2078	-0.164
2079	-0.171
2080	-0.177
2081	-0.183
2082	-0.187
2083	-0.192
2084	-0.196
2085	-0.199
2086	-0.203
2087	-0.205
2088	-0.206
2089	-0.206
2090	-0.205
2091	-0.204
2092	-0.203
2093	-0.201
2094	-0.199
2095	-0.197
2096	-0.196
2097	-0.193
2098	-0.19
2099	-0.187