Year | Value | 2022 | 139,886 | 2021 | 140,971 | 2020 | 141,530 | 2019 | 141,169 | 2018 | 141,073 | 2017 | 140,314 | 2016 | 138,871 | 2015 | 136,988 | 2014 | 134,951 | 2013 | 133,143 | 2012 | 131,839 | 2011 | 131,371 | 2010 | 131,517 | 2009 | 132,663 | 2008 | 134,741 | 2007 | 135,784 | 2006 | 136,507 | 2005 | 136,511 | 2004 | 135,944 | 2003 | 135,403 | 2002 | 135,756 | 2001 | 138,215 | 2000 | 144,543 | 1999 | 154,300 | 1998 | 165,953 | 1997 | 178,776 | 1996 | 192,737 | 1995 | 206,286 | 1994 | 217,140 | 1993 | 219,564 | 1992 | 214,427 | 1991 | 208,063 | 1990 | 201,538 | 1989 | 196,466 | 1988 | 191,581 | 1987 | 186,519 | 1986 | 181,946 | 1985 | 176,836 | 1984 | 171,309 | 1983 | 165,402 | 1982 | 158,868 | 1981 | 151,113 | 1980 | 141,506 | 1979 | 130,860 | 1978 | 121,794 | 1977 | 117,499 | 1976 | 120,409 | 1975 | 131,212 | 1974 | 147,676 | 1973 | 165,203 | 1972 | 179,260 | 1971 | 186,552 | 1970 | 186,256 | 1969 | 182,762 | 1968 | 179,584 | 1967 | 175,616 | 1966 | 170,895 | 1965 | 166,100 | 1964 | 163,191 | 1963 | 164,415 | 1962 | 168,885 | 1961 | 173,495 | 1960 | 174,403 |
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