Year | Value | 2021 | 1,410.8083101039 | 2020 | 1,230.6138536035 | 2019 | 1,336.6373201061 | 2018 | 1,508.9529370229 | 2017 | 1,463.0983554514 | 2016 | 1,369.8999215295 | 2015 | 1,194.1882424026 | 2014 | 1,086.0981552576 | 2013 | 1,038.0753086726 | 2012 | 1,019.4047903893 | 2011 | 988.14022044029 | 2010 | 828.42391828756 | 2009 | 795.91612765015 | 2008 | 813.74984247121 | 2007 | 740.69463682796 | 2006 | 679.03297634029 | 2005 | 605.07692423682 | 2004 | 556.17859294659 | 2003 | 481.48466528659 | 2002 | 424.16188371985 | 2001 | 434.26456706961 | 2000 | 462.75674938234 | 1999 | 367.93861478937 | 1998 | 370.12756034258 | 1997 | 383.77060708721 | 1996 | 403.16447160099 | 1995 | 399.80991473037 | 1994 | 354.74056762026 | 1993 | 362.58697550277 | 1992 | 350.51183194195 | 1991 | 339.03489701361 | 1990 | 305.77627446244 | 1989 | 320.66152785775 | 1988 | 318.76318368706 | 1987 | 285.32841462141 | 1986 | 283.41423633002 | 1985 | 287.70406040345 | 1984 | 299.57854655948 | 1983 | 285.0339738037 | 1982 | 318.27313798956 | 1981 | 303.89190645863 | 1980 | 266.12414721672 | 1979 | 210.61111652982 | 1978 | 207.98059932665 | 1977 | 178.94806775197 | 1976 | 163.75584330063 | 1975 | 143.62832645555 | 1974 | 116.57819853806 | 1973 | 88.616153726844 | 1972 | 135.11485970685 | 1971 | 158.44032228902 | 1970 | 146.10056206619 |
|