| Year | Value | | 2022 | 132,260 | | 2021 | 128,109 | | 2020 | 124,925 | | 2019 | 124,177 | | 2018 | 124,578 | | 2017 | 126,059 | | 2016 | 128,211 | | 2015 | 130,005 | | 2014 | 130,437 | | 2013 | 129,035 | | 2012 | 125,645 | | 2011 | 120,709 | | 2010 | 115,034 | | 2009 | 109,065 | | 2008 | 103,282 | | 2007 | 98,219 | | 2006 | 93,680 | | 2005 | 89,514 | | 2004 | 85,364 | | 2003 | 80,809 | | 2002 | 76,236 | | 2001 | 70,828 | | 2000 | 63,114 | | 1999 | 53,678 | | 1998 | 45,164 | | 1997 | 40,042 | | 1996 | 39,817 | | 1995 | 44,957 | | 1994 | 54,386 | | 1993 | 66,168 | | 1992 | 76,144 | | 1991 | 81,331 | | 1990 | 82,761 | | 1989 | 81,190 | | 1988 | 78,880 | | 1987 | 77,518 | | 1986 | 76,316 | | 1985 | 76,164 | | 1984 | 76,865 | | 1983 | 78,260 | | 1982 | 80,139 | | 1981 | 80,673 | | 1980 | 78,618 | | 1979 | 74,426 | | 1978 | 68,215 | | 1977 | 60,430 | | 1976 | 52,861 | | 1975 | 46,792 | | 1974 | 41,888 | | 1973 | 37,894 | | 1972 | 35,166 | | 1971 | 33,413 | | 1970 | 32,490 | | 1969 | 32,531 | | 1968 | 33,660 | | 1967 | 35,413 | | 1966 | 37,001 | | 1965 | 37,895 | | 1964 | 38,166 | | 1963 | 37,678 | | 1962 | 36,650 | | 1961 | 35,728 | | 1960 | 35,170 |
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