Year | Value | 2021 | 25,439,426.874 | 2020 | 18,073,886.216 | 2019 | 48,048,008.99753 | 2018 | 48,929,733.440362 | 2017 | 41,551,466.05 | 2016 | 39,962,744 | 2015 | 39,233,518 | 2014 | 40,338,413.273237 | 2013 | 38,896,500.17336 | 2012 | 38,732,387.243884 | 2011 | 39,379,075.226608 | 2010 | 33,183,814.054483 | 2009 | 22,127,432 | 2008 | 22,723,429 | 2007 | 20,199,039 | 2006 | 19,959,287 | 2005 | 17,404,468 | 2004 | 16,934,120 | 2003 | 13,756,737 | 2002 | 16,191,622 | 2001 | 18,495,379 | 2000 | 13,644,350 | 1999 | 13,668,700 | 1998 | 12,828,900 | 1997 | 13,161,200 | 1996 | 13,385,700 | 1995 | 13,230,400 | 1994 | 14,243,900 | 1993 | 16,134,800 | 1992 | 21,066,700 | 1991 | 16,253,700 | 1990 | 17,110,900 | 1989 | 19,924,600 | 1988 | 18,809,400 | 1987 | 16,423,100 | 1986 | 16,257,900 | 1985 | 15,874,800 | 1984 | 14,980,500 | 1983 | 16,043,200 | 1982 | 16,017,600 | 1981 | 15,712,200 | 1980 | 14,837,000 | 1979 | 13,205,700 | 1978 | 11,927,200 | 1977 | 10,807,400 | 1976 | 9,502,900 | 1975 | 7,788,200 | 1974 | 6,572,200 | 1973 | 6,018,800 | 1972 | 5,380,800 | 1971 | 4,830,800 | 1970 | 4,293,500 |
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