Year	Percent
1950	1.838
1951	1.906
1952	2.001
1953	2.023
1954	1.998
1955	1.949
1956	1.898
1957	1.863
1958	1.855
1959	1.876
1960	1.912
1961	1.939
1962	1.923
1963	1.841
1964	1.698
1965	1.524
1966	1.354
1967	1.223
1968	1.154
1969	1.144
1970	1.167
1971	1.191
1972	1.194
1973	1.169
1974	1.115
1975	1.042
1976	0.97
1977	0.924
1978	0.922
1979	0.96
1980	1.001
1981	1.012
1982	1.003
1983	0.992
1984	0.966
1985	0.965
1986	0.974
1987	0.811
1988	0.313
1989	-0.498
1990	-1.521
1991	-2.578
1992	-3.354
1993	-3.547
1994	-3.081
1995	-2.18
1996	-1.202
1997	-0.397
1998	0.089
1999	0.216
2000	0.162
2001	0.121
2002	0.105
2003	0.073
2004	0.03
2005	-0.024
2006	-0.1
2007	-0.21
2008	-0.365
2009	-0.555
2010	-0.776
2011	-1.002
2012	-1.15
2013	-1.139
2014	-0.967
2015	-0.694
2016	-0.411
2017	-0.189
2018	-0.075
2019	-0.076
2020	-0.139
2021	-0.2
2022	-0.242
2023	-0.267
2024	-0.272
2025	-0.27
2026	-0.276
2027	-0.29
2028	-0.307
2029	-0.327
2030	-0.349
2031	-0.371
2032	-0.394
2033	-0.417
2034	-0.44
2035	-0.464
2036	-0.487
2037	-0.509
2038	-0.529
2039	-0.547
2040	-0.563
2041	-0.579
2042	-0.592
2043	-0.603
2044	-0.612
2045	-0.619
2046	-0.625
2047	-0.629
2048	-0.63
2049	-0.631
2050	-0.63
2051	-0.628
2052	-0.626
2053	-0.624
2054	-0.623
2055	-0.621
2056	-0.62
2057	-0.62
2058	-0.622
2059	-0.626
2060	-0.632
2061	-0.638
2062	-0.644
2063	-0.651
2064	-0.659
2065	-0.667
2066	-0.675
2067	-0.684
2068	-0.691
2069	-0.698
2070	-0.705
2071	-0.711
2072	-0.716
2073	-0.72
2074	-0.722
2075	-0.722
2076	-0.722
2077	-0.72
2078	-0.717
2079	-0.713
2080	-0.708
2081	-0.702
2082	-0.694
2083	-0.686
2084	-0.677
2085	-0.667
2086	-0.656
2087	-0.645
2088	-0.632
2089	-0.62
2090	-0.606
2091	-0.593
2092	-0.579
2093	-0.566
2094	-0.554
2095	-0.541
2096	-0.53
2097	-0.519
2098	-0.509
2099	-0.5