Year | Value | 2021 | 37,123 | 2020 | 99,250 | 2019 | 260,599 | 2018 | 251,621 | 2017 | 243,811 | 2016 | 277,671 | 2015 | 273,462 | 2014 | 264,899 | 2013 | 258,027 | 2012 | 306,320.50332005 | 2011 | 328,771.58001328 | 2010 | 335,280 | 2009 | 382,897 | 2008 | 382,590 | 2007 | 431,647 | 2006 | 447,749 | 2005 | 445,968 | 2004 | 382,317 | 2003 | 385,911 | 2002 | 350,552 | 2001 | 393,484 | 2000 | 367,584 | 1999 | 358,900 | 1998 | 338,200 | 1997 | 321,400 | 1996 | 306,800 | 1995 | 280,000 | 1994 | 268,900 | 1993 | 265,300 | 1992 | 261,400 | 1991 | 231,500 | 1990 | 229,400 | 1989 | 214,200 | 1988 | 189,700 | 1987 | 180,100 | 1986 | 172,400 | 1985 | 174,700 | 1984 | 161,100 | 1983 | 160,700 | 1982 | 158,900 | 1981 | 152,800 | 1980 | 162,500 | 1979 | 160,700 | 1978 | 159,700 | 1977 | 166,900 | 1976 | 171,100 | 1975 | 171,700 | 1974 | 185,100 | 1973 | 184,900 | 1972 | 204,800 | 1971 | 196,300 | 1970 | 183,500 |
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