| Year | Value | | 2022 | 135,733 | | 2021 | 132,911 | | 2020 | 130,201 | | 2019 | 126,838 | | 2018 | 124,193 | | 2017 | 121,880 | | 2016 | 119,867 | | 2015 | 117,982 | | 2014 | 115,952 | | 2013 | 113,248 | | 2012 | 109,418 | | 2011 | 103,776 | | 2010 | 94,529 | | 2009 | 82,410 | | 2008 | 70,851 | | 2007 | 63,589 | | 2006 | 65,038 | | 2005 | 75,303 | | 2004 | 91,824 | | 2003 | 110,786 | | 2002 | 127,067 | | 2001 | 135,786 | | 2000 | 136,937 | | 1999 | 133,527 | | 1998 | 128,654 | | 1997 | 124,978 | | 1996 | 124,221 | | 1995 | 127,664 | | 1994 | 135,610 | | 1993 | 142,687 | | 1992 | 145,890 | | 1991 | 147,629 | | 1990 | 147,476 | | 1989 | 146,031 | | 1988 | 140,528 | | 1987 | 131,028 | | 1986 | 121,792 | | 1985 | 113,546 | | 1984 | 106,529 | | 1983 | 100,651 | | 1982 | 95,564 | | 1981 | 91,794 | | 1980 | 90,229 | | 1979 | 91,329 | | 1978 | 94,909 | | 1977 | 99,672 | | 1976 | 103,859 | | 1975 | 106,350 | | 1974 | 106,467 | | 1973 | 104,425 | | 1972 | 101,406 | | 1971 | 97,992 | | 1970 | 94,463 | | 1969 | 91,314 | | 1968 | 88,805 | | 1967 | 87,112 | | 1966 | 85,823 | | 1965 | 83,880 | | 1964 | 81,024 | | 1963 | 77,456 | | 1962 | 73,353 | | 1961 | 69,198 | | 1960 | 65,481 |
|