Year | Value | 2022 | 181,755 | 2021 | 179,393 | 2020 | 178,839 | 2019 | 179,231 | 2018 | 180,983 | 2017 | 184,556 | 2016 | 188,655 | 2015 | 191,482 | 2014 | 193,047 | 2013 | 193,722 | 2012 | 192,862 | 2011 | 190,789 | 2010 | 188,978 | 2009 | 186,767 | 2008 | 182,791 | 2007 | 177,933 | 2006 | 173,445 | 2005 | 169,447 | 2004 | 166,422 | 2003 | 164,689 | 2002 | 163,569 | 2001 | 162,851 | 2000 | 162,606 | 1999 | 161,593 | 1998 | 160,147 | 1997 | 159,269 | 1996 | 158,016 | 1995 | 156,579 | 1994 | 156,016 | 1993 | 156,337 | 1992 | 157,531 | 1991 | 160,396 | 1990 | 162,539 | 1989 | 162,226 | 1988 | 158,907 | 1987 | 151,569 | 1986 | 140,566 | 1985 | 129,609 | 1984 | 120,914 | 1983 | 113,696 | 1982 | 108,643 | 1981 | 105,525 | 1980 | 102,793 | 1979 | 99,825 | 1978 | 97,855 | 1977 | 97,338 | 1976 | 98,119 | 1975 | 100,204 | 1974 | 102,970 | 1973 | 105,486 | 1972 | 107,565 | 1971 | 109,785 | 1970 | 112,251 | 1969 | 115,057 | 1968 | 119,002 | 1967 | 122,989 | 1966 | 126,146 | 1965 | 130,002 | 1964 | 132,201 | 1963 | 131,588 | 1962 | 131,211 | 1961 | 130,204 | 1960 | 127,167 |
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