Year | Value | 2021 | 2,937.6175042541 | 2020 | 2,716.0705443984 | 2019 | 2,903.8185992206 | 2018 | 2,610.6226218409 | 2017 | 2,603.9965604707 | 2016 | 2,289.5463804379 | 2015 | 2,186.7590043179 | 2014 | 2,125.8086021577 | 2013 | 1,979.1596948585 | 2012 | 1,991.9132920851 | 2011 | 2,029.2551222896 | 2010 | 1,790.6809749347 | 2009 | 1,495.296705152 | 2008 | 1,521.645803875 | 2007 | 1,483.5539427927 | 2006 | 1,153.4543844576 | 2005 | 1,063.2882901966 | 2004 | 919.5042330748 | 2003 | 831.02455487962 | 2002 | 745.25220712335 | 2001 | 684.19925949208 | 2000 | 641.03355354846 | 1999 | 496.31979838814 | 1998 | 486.76587066317 | 1997 | 521.75372344291 | 1996 | 431.06862809626 | 1995 | 412.46361287278 | 1994 | 404.00888301554 | 1993 | 333.84226128526 | 1992 | 327.86320036813 | 1991 | 330.12220330126 | 1990 | 423.08300830488 | 1989 | 401.80066307894 | 1988 | 397.82841218061 | 1987 | 347.90675054132 | 1986 | 258.46424397905 | 1985 | 231.37551889038 | 1984 | 225.42481174472 | 1983 | 191.53347350321 | 1982 | 173.79562100637 | 1981 | 199.75308396458 | 1980 | 191.23165083619 |
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