Year | Value | 2022 | 152,466 | 2021 | 156,321 | 2020 | 157,668 | 2019 | 158,870 | 2018 | 159,875 | 2017 | 160,923 | 2016 | 161,807 | 2015 | 162,257 | 2014 | 161,854 | 2013 | 160,794 | 2012 | 158,805 | 2011 | 155,940 | 2010 | 154,441 | 2009 | 154,491 | 2008 | 157,942 | 2007 | 164,440 | 2006 | 172,083 | 2005 | 177,462 | 2004 | 177,738 | 2003 | 172,798 | 2002 | 169,336 | 2001 | 170,649 | 2000 | 175,011 | 1999 | 183,043 | 1998 | 193,739 | 1997 | 201,283 | 1996 | 204,307 | 1995 | 207,228 | 1994 | 213,516 | 1993 | 217,326 | 1992 | 222,094 | 1991 | 224,500 | 1990 | 226,768 | 1989 | 231,645 | 1988 | 235,466 | 1987 | 237,262 | 1986 | 238,209 | 1985 | 239,465 | 1984 | 241,531 | 1983 | 243,980 | 1982 | 248,030 | 1981 | 253,476 | 1980 | 257,984 | 1979 | 260,275 | 1978 | 260,817 | 1977 | 259,865 | 1976 | 256,554 | 1975 | 252,051 | 1974 | 250,335 | 1973 | 250,093 | 1972 | 250,279 | 1971 | 252,773 | 1970 | 257,127 | 1969 | 259,919 | 1968 | 261,246 | 1967 | 262,623 | 1966 | 264,184 | 1965 | 265,773 | 1964 | 267,625 | 1963 | 269,535 | 1962 | 271,381 | 1961 | 275,368 | 1960 | 281,383 |
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