Year | Value | 2021 | 16,490 | 2020 | 4,946 | 2019 | 19,822.5 | 2018 | 21,212 | 2017 | 14,958 | 2016 | 52,187 | 2015 | 41,812 | 2014 | 163,824 | 2013 | 198,804 | 2012 | 182,144.4 | 2011 | 141,603 | 2010 | 154,909 | 2009 | 64,234 | 2008 | 63,160 | 2007 | 59,715 | 2006 | 55,292 | 2005 | 49,368 | 2004 | 45,711 | 2003 | 39,749 | 2002 | 40,560 | 2001 | 40,560 | 2000 | 39,379 | 1999 | 179,400 | 1998 | 99,800 | 1997 | 100,200 | 1996 | 100,200 | 1995 | 94,600 | 1994 | 62,500 | 1993 | 77,700 | 1992 | 31,600 | 1991 | 26,300 | 1990 | 116,000 | 1989 | 116,000 | 1988 | 61,000 | 1987 | 46,000 | 1986 | 50,000 | 1985 | 35,300 | 1984 | 49,500 | 1983 | 75,100 | 1982 | 62,200 | 1981 | 62,600 | 1980 | 82,600 | 1976 | 73,800 | 1975 | 57,600 | 1974 | 62,700 | 1973 | 52,400 | 1972 | 165,500 | 1971 | 188,000 | 1970 | 171,500 |
|