| Year | Value | | 2022 | 174,145 | | 2021 | 178,706 | | 2020 | 184,913 | | 2019 | 190,432 | | 2018 | 192,915 | | 2017 | 193,069 | | 2016 | 191,634 | | 2015 | 188,569 | | 2014 | 185,617 | | 2013 | 183,960 | | 2012 | 183,391 | | 2011 | 182,974 | | 2010 | 182,214 | | 2009 | 181,014 | | 2008 | 178,350 | | 2007 | 172,796 | | 2006 | 165,217 | | 2005 | 158,570 | | 2004 | 153,080 | | 2003 | 147,999 | | 2002 | 144,142 | | 2001 | 140,957 | | 2000 | 137,878 | | 1999 | 134,919 | | 1998 | 131,828 | | 1997 | 128,813 | | 1996 | 126,406 | | 1995 | 124,030 | | 1994 | 122,232 | | 1993 | 121,146 | | 1992 | 119,977 | | 1991 | 119,189 | | 1990 | 119,225 | | 1989 | 117,869 | | 1988 | 116,496 | | 1987 | 116,551 | | 1986 | 116,542 | | 1985 | 117,049 | | 1984 | 117,640 | | 1983 | 115,429 | | 1982 | 109,995 | | 1981 | 103,138 | | 1980 | 95,926 | | 1979 | 90,850 | | 1978 | 86,749 | | 1977 | 82,755 | | 1976 | 80,859 | | 1975 | 80,074 | | 1974 | 78,358 | | 1973 | 76,586 | | 1972 | 75,691 | | 1971 | 74,718 | | 1970 | 73,986 | | 1969 | 74,026 | | 1968 | 74,354 | | 1967 | 74,664 | | 1966 | 75,343 | | 1965 | 75,855 | | 1964 | 76,129 | | 1963 | 76,839 | | 1962 | 77,921 | | 1961 | 80,292 | | 1960 | 84,276 |
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