| Year | Value | | 2022 | 276,869 | | 2021 | 269,705 | | 2020 | 266,898 | | 2019 | 259,854 | | 2018 | 248,581 | | 2017 | 238,841 | | 2016 | 231,198 | | 2015 | 224,836 | | 2014 | 218,536 | | 2013 | 213,359 | | 2012 | 209,654 | | 2011 | 207,194 | | 2010 | 205,890 | | 2009 | 204,618 | | 2008 | 202,981 | | 2007 | 201,658 | | 2006 | 201,030 | | 2005 | 200,402 | | 2004 | 199,209 | | 2003 | 197,937 | | 2002 | 196,682 | | 2001 | 195,236 | | 2000 | 193,798 | | 1999 | 192,511 | | 1998 | 191,273 | | 1997 | 189,934 | | 1996 | 188,415 | | 1995 | 187,081 | | 1994 | 185,629 | | 1993 | 183,808 | | 1992 | 181,934 | | 1991 | 180,001 | | 1990 | 175,180 | | 1989 | 173,438 | | 1988 | 171,694 | | 1987 | 170,213 | | 1986 | 168,940 | | 1985 | 166,047 | | 1984 | 163,009 | | 1983 | 162,675 | | 1982 | 160,005 | | 1981 | 156,209 | | 1980 | 154,725 | | 1979 | 152,792 | | 1978 | 150,896 | | 1977 | 148,964 | | 1976 | 147,980 | | 1975 | 146,817 | | 1974 | 145,372 | | 1973 | 145,156 | | 1972 | 145,067 | | 1971 | 145,041 | | 1970 | 144,933 | | 1969 | 145,724 | | 1968 | 147,504 | | 1967 | 149,317 | | 1966 | 151,148 | | 1965 | 153,031 | | 1964 | 154,358 | | 1963 | 155,081 | | 1962 | 155,812 | | 1961 | 156,449 | | 1960 | 156,985 |
|