Year | Value | 2022 | 138,213 | 2021 | 148,689 | 2020 | 151,583 | 2019 | 154,359 | 2018 | 157,123 | 2017 | 159,705 | 2016 | 162,778 | 2015 | 167,083 | 2014 | 173,015 | 2013 | 179,128 | 2012 | 183,610 | 2011 | 186,186 | 2010 | 186,250 | 2009 | 183,067 | 2008 | 178,079 | 2007 | 173,220 | 2006 | 169,160 | 2005 | 167,081 | 2004 | 166,650 | 2003 | 165,427 | 2002 | 163,153 | 2001 | 164,729 | 2000 | 167,267 | 1999 | 168,694 | 1998 | 174,778 | 1997 | 185,049 | 1996 | 196,244 | 1995 | 209,010 | 1994 | 223,517 | 1993 | 237,278 | 1992 | 250,953 | 1991 | 264,066 | 1990 | 274,082 | 1989 | 283,251 | 1988 | 289,488 | 1987 | 291,677 | 1986 | 293,409 | 1985 | 296,385 | 1984 | 301,734 | 1983 | 307,705 | 1982 | 314,611 | 1981 | 322,916 | 1980 | 331,048 | 1979 | 337,738 | 1978 | 342,689 | 1977 | 342,812 | 1976 | 339,296 | 1975 | 337,213 | 1974 | 335,986 | 1973 | 336,067 | 1972 | 336,311 | 1971 | 333,433 | 1970 | 328,345 | 1969 | 321,807 | 1968 | 314,766 | 1967 | 311,916 | 1966 | 314,451 | 1965 | 318,682 | 1964 | 321,699 | 1963 | 323,318 | 1962 | 325,365 | 1961 | 327,794 | 1960 | 330,293 |
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