Year | Value | 2022 | 138,868 | 2021 | 141,006 | 2020 | 142,905 | 2019 | 142,689 | 2018 | 141,266 | 2017 | 139,549 | 2016 | 139,066 | 2015 | 139,957 | 2014 | 141,088 | 2013 | 141,948 | 2012 | 141,685 | 2011 | 139,999 | 2010 | 137,483 | 2009 | 134,546 | 2008 | 131,430 | 2007 | 129,052 | 2006 | 127,395 | 2005 | 126,707 | 2004 | 127,399 | 2003 | 129,246 | 2002 | 132,222 | 2001 | 136,179 | 2000 | 140,471 | 1999 | 145,136 | 1998 | 151,380 | 1997 | 158,824 | 1996 | 167,037 | 1995 | 175,498 | 1994 | 182,327 | 1993 | 187,268 | 1992 | 191,318 | 1991 | 195,487 | 1990 | 200,835 | 1989 | 206,674 | 1988 | 211,426 | 1987 | 215,308 | 1986 | 218,677 | 1985 | 221,110 | 1984 | 224,217 | 1983 | 228,209 | 1982 | 231,434 | 1981 | 234,013 | 1980 | 236,302 | 1979 | 236,670 | 1978 | 234,164 | 1977 | 229,674 | 1976 | 222,994 | 1975 | 215,510 | 1974 | 207,537 | 1973 | 199,038 | 1972 | 192,389 | 1971 | 189,392 | 1970 | 189,345 | 1969 | 191,224 | 1968 | 195,001 | 1967 | 198,786 | 1966 | 201,493 | 1965 | 204,056 | 1964 | 205,524 | 1963 | 206,976 | 1962 | 211,101 | 1961 | 216,639 | 1960 | 218,093 |
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