Year | Value | 2022 | 176,984 | 2021 | 175,714 | 2020 | 175,831 | 2019 | 176,735 | 2018 | 177,539 | 2017 | 178,792 | 2016 | 180,144 | 2015 | 181,195 | 2014 | 182,588 | 2013 | 183,886 | 2012 | 184,397 | 2011 | 183,721 | 2010 | 181,427 | 2009 | 177,904 | 2008 | 173,619 | 2007 | 168,477 | 2006 | 163,449 | 2005 | 158,833 | 2004 | 153,908 | 2003 | 149,186 | 2002 | 145,700 | 2001 | 143,493 | 2000 | 142,951 | 1999 | 144,859 | 1998 | 148,741 | 1997 | 153,171 | 1996 | 157,927 | 1995 | 163,738 | 1994 | 169,534 | 1993 | 174,569 | 1992 | 180,009 | 1991 | 185,364 | 1990 | 187,522 | 1989 | 187,586 | 1988 | 188,397 | 1987 | 190,383 | 1986 | 194,606 | 1985 | 200,694 | 1984 | 206,592 | 1983 | 211,075 | 1982 | 211,846 | 1981 | 207,868 | 1980 | 202,308 | 1979 | 197,130 | 1978 | 192,375 | 1977 | 189,383 | 1976 | 188,381 | 1975 | 188,481 | 1974 | 189,196 | 1973 | 190,162 | 1972 | 190,807 | 1971 | 190,858 | 1970 | 190,903 | 1969 | 191,555 | 1968 | 193,592 | 1967 | 198,176 | 1966 | 205,420 | 1965 | 213,035 | 1964 | 218,744 | 1963 | 220,291 | 1962 | 216,465 | 1961 | 206,998 | 1960 | 194,477 |
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