| Year | Value | | 2021 | 14,799.383803918 | | 2020 | 12,911.789034214 | | 2019 | 13,651.960481363 | | 2018 | 13,155.833797049 | | 2017 | 11,639.406169086 | | 2016 | 10,567.309638215 | | 2015 | 9,983.0183683218 | | 2014 | 11,185.671088727 | | 2013 | 10,828.65171535 | | 2012 | 10,013.359401338 | | 2011 | 10,941.720040254 | | 2010 | 10,184.541236647 | | 2009 | 10,131.48045755 | | 2008 | 12,114.250129756 | | 2007 | 10,606.112761468 | | 2006 | 8,913.2733122334 | | 2005 | 8,735.6164739926 | | 2004 | 8,019.1427552444 | | 2003 | 6,544.6197255989 | | 2002 | 5,133.9135482148 | | 2001 | 3,992.5988017641 | | 2000 | 3,455.9298854855 | | 1999 | 3,546.0899635599 | | 1998 | 3,550.9698761066 | | 1997 | 3,408.6363264382 | | 1996 | 3,385.5381219208 | | 1995 | 3,401.4212118207 | | 1994 | 3,285.2204069181 | | 1993 | 3,057.5782547088 |
|