Year | Value | 2021 | 482.446571564 | 2020 | 262.65182067416 | 2019 | 544.96739642573 | 2018 | 556.95225028779 | 2017 | 527.29824622177 | 2016 | 472.69668528861 | 2015 | 475.14971206195 | 2014 | 561.04178350106 | 2013 | 635.00619217033 | 2012 | 564.01478510911 | 2011 | 493.75273672678 | 2010 | 573.8515870475 | 2001 | 337.85600009537 | 2000 | 412.385 | 1999 | 399.5999978485 | 1998 | 369.6000005305 | 1997 | 372.0000042095 | 1996 | 404.4999984054 | 1995 | 401.5999995171 | 1994 | 428.7999965846 | 1993 | 367.4999998511 | 1992 | 378.6999972538 | 1991 | 402.9000040816 | 1990 | 533.6000063046 | 1989 | 576.3000046835 | 1988 | 541.7999980375 | 1987 | 539.9999976458 | 1986 | 489.0000040457 | 1985 | 523.4999993143 | 1984 | 508.7999957726 | 1983 | 527.2999972031 | 1982 | 527.2000000401 | 1981 | 503.8000025303 | 1980 | 467.5000034049 | 1979 | 453.900000513 | 1978 | 354.5000021981 | 1977 | 319.3999988586 | 1976 | 311.2000000777 | 1975 | 259.9000006618 | 1974 | 244.8000033645 | 1973 | 185.4000012799 | 1972 | 156.4999995158 | 1971 | 151.699998334 | 1970 | 137.500000581 |
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