| Year | Value | | 2019 | 63,378,168.724418 | | 2018 | 62,727,473.879399 | | 2017 | 60,503,751 | | 2016 | 59,930,507 | | 2015 | 51,784,766 | | 2014 | 47,106,779.952765 | | 2013 | 42,160,917.6 | | 2012 | 42,154,410.296311 | | 2011 | 38,988,883.5829 | | 2010 | 36,212,017.263432 | | 2001 | 19,806,596 | | 2000 | 20,091,826 | | 1999 | 18,686,500 | | 1998 | 15,925,200 | | 1997 | 15,107,800 | | 1996 | 15,011,900 | | 1995 | 14,804,300 | | 1994 | 14,086,600 | | 1993 | 12,380,400 | | 1992 | 11,807,800 | | 1991 | 11,625,200 | | 1990 | 10,857,400 | | 1989 | 10,725,700 | | 1988 | 10,354,200 | | 1987 | 9,861,000 | | 1986 | 9,429,300 | | 1985 | 8,994,900 | | 1984 | 8,456,300 | | 1983 | 7,544,700 | | 1982 | 7,466,000 | | 1981 | 7,233,400 | | 1980 | 5,689,200 | | 1979 | 5,196,500 |
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