Year	Percent
1950	2.019
1951	1.205
1952	-0.3
1953	-1.55
1954	-2.529
1955	-3.197
1956	-3.471
1957	-3.251
1958	-2.454
1959	-1.098
1960	0.642
1961	2.44
1962	3.888
1963	4.703
1964	4.902
1965	4.83
1966	4.736
1967	4.442
1968	3.754
1969	2.753
1970	1.613
1971	0.52
1972	-0.362
1973	-0.909
1974	-1.089
1975	-1.076
1976	-1.031
1977	-0.82
1978	-0.258
1979	0.617
1980	1.66
1981	2.678
1982	3.485
1983	3.973
1984	4.149
1985	4.175
1986	4.175
1987	4.09
1988	3.843
1989	3.47
1990	3.039
1991	2.623
1992	2.29
1993	2.094
1994	2.029
1995	2.023
1996	2.017
1997	2.025
1998	2.078
1999	2.166
2000	2.274
2001	2.386
2002	2.457
2003	2.451
2004	2.378
2005	2.267
2006	2.156
2007	2.087
2008	2.088
2009	2.152
2010	2.245
2011	2.325
2012	2.347
2013	2.28
2014	2.133
2015	1.948
2016	1.768
2017	1.627
2018	1.544
2019	1.515
2020	1.515
2021	1.51
2022	1.491
2023	1.459
2024	1.41
2025	1.356
2026	1.305
2027	1.256
2028	1.207
2029	1.157
2030	1.106
2031	1.057
2032	1.012
2033	0.969
2034	0.93
2035	0.895
2036	0.861
2037	0.83
2038	0.803
2039	0.781
2040	0.761
2041	0.743
2042	0.727
2043	0.714
2044	0.703
2045	0.695
2046	0.686
2047	0.677
2048	0.666
2049	0.652
2050	0.637
2051	0.623
2052	0.607
2053	0.592
2054	0.577
2055	0.561
2056	0.545
2057	0.529
2058	0.511
2059	0.494
2060	0.477
2061	0.46
2062	0.443
2063	0.427
2064	0.412
2065	0.397
2066	0.383
2067	0.37
2068	0.356
2069	0.343
2070	0.33
2071	0.318
2072	0.307
2073	0.297
2074	0.289
2075	0.282
2076	0.276
2077	0.27
2078	0.264
2079	0.256
2080	0.249
2081	0.243
2082	0.24
2083	0.239
2084	0.242
2085	0.247
2086	0.252
2087	0.259
2088	0.27
2089	0.282
2090	0.296
2091	0.31
2092	0.323
2093	0.333
2094	0.342
2095	0.349
2096	0.354
2097	0.357
2098	0.358
2099	0.358