Year	Percent
1950	1.542
1951	1.959
1952	2.537
1953	2.683
1954	2.549
1955	2.277
1956	1.989
1957	1.785
1958	1.73
1959	1.841
1960	2.055
1961	2.237
1962	2.217
1963	1.874
1964	1.242
1965	0.445
1966	-0.337
1967	-0.856
1968	-0.912
1969	-0.493
1970	0.205
1971	0.907
1972	1.412
1973	1.614
1974	1.511
1975	1.251
1976	1.004
1977	0.852
1978	0.828
1979	0.93
1980	1.096
1981	1.241
1982	1.283
1983	1.168
1984	0.908
1985	0.565
1986	0.226
1987	-0.025
1988	-0.129
1989	-0.085
1990	0.044
1991	0.176
1992	0.252
1993	0.235
1994	0.126
1995	-0.03
1996	-0.177
1997	-0.272
1998	-0.289
1999	-0.226
2000	-0.12
2001	-0.015
2002	0.075
2003	0.144
2004	0.186
2005	0.218
2006	0.251
2007	0.272
2008	0.271
2009	0.247
2010	0.209
2011	0.168
2012	0.13
2013	0.103
2014	0.086
2015	0.075
2016	0.062
2017	0.048
2018	0.031
2019	0.014
2020	-0.002
2021	-0.019
2022	-0.035
2023	-0.05
2024	-0.062
2025	-0.074
2026	-0.088
2027	-0.101
2028	-0.115
2029	-0.131
2030	-0.146
2031	-0.162
2032	-0.178
2033	-0.194
2034	-0.212
2035	-0.231
2036	-0.249
2037	-0.266
2038	-0.283
2039	-0.3
2040	-0.316
2041	-0.331
2042	-0.346
2043	-0.359
2044	-0.371
2045	-0.381
2046	-0.391
2047	-0.399
2048	-0.406
2049	-0.412
2050	-0.417
2051	-0.421
2052	-0.426
2053	-0.43
2054	-0.434
2055	-0.438
2056	-0.443
2057	-0.447
2058	-0.453
2059	-0.46
2060	-0.466
2061	-0.475
2062	-0.483
2063	-0.491
2064	-0.5
2065	-0.509
2066	-0.519
2067	-0.528
2068	-0.537
2069	-0.546
2070	-0.553
2071	-0.56
2072	-0.567
2073	-0.573
2074	-0.58
2075	-0.584
2076	-0.587
2077	-0.591
2078	-0.593
2079	-0.597
2080	-0.599
2081	-0.6
2082	-0.601
2083	-0.6
2084	-0.601
2085	-0.599
2086	-0.596
2087	-0.595
2088	-0.592
2089	-0.591
2090	-0.59
2091	-0.588
2092	-0.584
2093	-0.581
2094	-0.577
2095	-0.572
2096	-0.566
2097	-0.56
2098	-0.554
2099	-0.548