Year Percent
1950 -2.894
1951 -2.43
1952 -1.442
1953 -0.383
1954 0.647
1955 1.548
1956 2.232
1957 2.642
1958 2.756
1959 2.606
1960 2.282
1961 1.921
1962 1.685
1963 1.701
1964 1.959
1965 2.317
1966 2.621
1967 2.815
1968 2.893
1969 2.857
1970 2.774
1971 2.693
1972 2.579
1973 2.389
1974 2.138
1975 1.854
1976 1.578
1977 1.374
1978 1.29
1979 1.323
1980 1.417
1981 1.512
1982 1.574
1983 1.589
1984 1.558
1985 1.501
1986 1.448
1987 1.419
1988 1.425
1989 1.462
1990 1.516
1991 1.563
1992 1.568
1993 1.507
1994 1.383
1995 1.226
1996 1.071
1997 0.949
1998 0.879
1999 0.862
2000 0.872
2001 0.881
2002 0.872
2003 0.835
2004 0.771
2005 0.694
2006 0.622
2007 0.566
2008 0.534
2009 0.524
2010 0.527
2011 0.531
2012 0.53
2013 0.525
2014 0.514
2015 0.5
2016 0.487
2017 0.475
2018 0.462
2019 0.447
2020 0.432
2021 0.416
2022 0.4
2023 0.383
2024 0.365
2025 0.348
2026 0.329
2027 0.309
2028 0.287
2029 0.262
2030 0.235
2031 0.209
2032 0.183
2033 0.157
2034 0.131
2035 0.105
2036 0.08
2037 0.056
2038 0.034
2039 0.013
2040 -0.006
2041 -0.025
2042 -0.043
2043 -0.059
2044 -0.074
2045 -0.088
2046 -0.101
2047 -0.113
2048 -0.124
2049 -0.135
2050 -0.145
2051 -0.154
2052 -0.163
2053 -0.171
2054 -0.178
2055 -0.185
2056 -0.191
2057 -0.197
2058 -0.203
2059 -0.209
2060 -0.215
2061 -0.22
2062 -0.225
2063 -0.23
2064 -0.233
2065 -0.236
2066 -0.239
2067 -0.242
2068 -0.246
2069 -0.249
2070 -0.253
2071 -0.256
2072 -0.259
2073 -0.262
2074 -0.265
2075 -0.267
2076 -0.27
2077 -0.272
2078 -0.274
2079 -0.277
2080 -0.279
2081 -0.282
2082 -0.284
2083 -0.286
2084 -0.288
2085 -0.289
2086 -0.291
2087 -0.293
2088 -0.295
2089 -0.297
2090 -0.298
2091 -0.3
2092 -0.302
2093 -0.304
2094 -0.306
2095 -0.308
2096 -0.309
2097 -0.311
2098 -0.313
2099 -0.315