Year | Value | 2021 | 1,079.5371809839 | 2020 | 770.81133056297 | 2019 | 877.06794187323 | 2018 | 1,044.4033854584 | 2017 | 866.19176140248 | 2016 | 1,169.7532588972 | 2015 | 1,473.5280938142 | 2014 | 2,140.1146598995 | 2013 | 1,938.4833479308 | 2012 | 1,516.6817193586 | 2011 | 940.93543186102 | 2010 | 1,052.6372309478 | 2009 | 939.17098030064 | 2008 | 765.42123392032 | 2007 | 609.19656788985 | 2006 | 466.35774965866 | 2005 | 327.81288445017 | 2004 | 194.86125401124 | 2003 | 204.80303767352 | 2002 | 102.73617135015 | 2001 | 75.648453718447 | 2000 | 4.8617804057131 | 1999 | 120.08080888339 | 1998 | 180.02630078445 | 1997 | 104.43408440965 | 1996 | 34.52260297031 | 1995 | 22.833534913738 | 1994 | 210.01793501887 | 1993 | 290.52659742567 | 1992 | 456.61528059809 | 1991 | 419.47287882573 | 1990 | 276.36953343345 | 1989 | 306.02283513419 | 1988 | 415.28941857714 | 1987 | 599.24525796742 | 1986 | 560.7813243951 | 1985 | 571.88844161664 | 1984 | 608.93341531367 | 1983 | 640.85301578064 | 1982 | 813.96296013525 | 1981 | 725.71258128818 | 1980 | 516.20653947297 | 1979 | 343.46820314198 | 1978 | 300.40853718351 | 1977 | 285.5588667363 | 1976 | 293.86541088262 | 1975 | 325.23633052944 | 1974 | 225.78978600815 | 1973 | 260.03217557274 | 1972 | 217.79764590788 | 1971 | 179.62807444577 | 1970 | 158.66865836593 |
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