Year | Value | 2016 | 77,320 | 2015 | 137,331 | 2012 | 42,729.319471276 | 2011 | 121,233.39565811 | 2010 | 243,635.52898997 | 2009 | 524,867 | 2008 | 545,640 | 2007 | 535,324 | 2006 | 508,368 | 2005 | 465,343 | 2004 | 430,873 | 2003 | 385,529 | 2002 | 365,877 | 2001 | 373,904 | 2000 | 446,688 | 1999 | 423,100 | 1998 | 466,700 | 1997 | 468,500 | 1996 | 431,300 | 1995 | 508,200 | 1994 | 505,200 | 1993 | 302,300 | 1992 | 471,400 | 1991 | 436,000 | 1990 | 398,300 | 1989 | 406,700 | 1988 | 382,800 | 1987 | 393,100 | 1986 | 459,500 | 1985 | 456,000 | 1984 | 436,100 | 1983 | 428,300 | 1982 | 421,000 | 1981 | 340,000 | 1980 | 331,100 | 1979 | 175,000 | 1978 | 170,000 | 1977 | 176,700 | 1976 | 190,400 | 1975 | 139,700 | 1974 | 136,200 | 1973 | 130,300 | 1972 | 122,800 | 1971 | 125,500 | 1970 | 120,200 |
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