Year | Value | 2022 | 145,865 | 2021 | 148,328 | 2020 | 150,411 | 2019 | 150,308 | 2018 | 148,605 | 2017 | 146,815 | 2016 | 146,420 | 2015 | 146,818 | 2014 | 147,845 | 2013 | 149,211 | 2012 | 148,900 | 2011 | 146,987 | 2010 | 144,804 | 2009 | 141,992 | 2008 | 138,624 | 2007 | 136,131 | 2006 | 134,513 | 2005 | 133,852 | 2004 | 134,213 | 2003 | 135,921 | 2002 | 139,135 | 2001 | 143,284 | 2000 | 147,738 | 1999 | 152,556 | 1998 | 159,147 | 1997 | 166,907 | 1996 | 175,046 | 1995 | 183,905 | 1994 | 191,484 | 1993 | 196,466 | 1992 | 200,128 | 1991 | 204,195 | 1990 | 209,472 | 1989 | 215,300 | 1988 | 220,448 | 1987 | 225,022 | 1986 | 228,631 | 1985 | 231,065 | 1984 | 234,156 | 1983 | 237,760 | 1982 | 241,002 | 1981 | 244,222 | 1980 | 246,583 | 1979 | 246,870 | 1978 | 244,567 | 1977 | 239,538 | 1976 | 232,044 | 1975 | 224,486 | 1974 | 216,666 | 1973 | 208,308 | 1972 | 202,051 | 1971 | 198,979 | 1970 | 198,655 | 1969 | 200,791 | 1968 | 205,116 | 1967 | 209,330 | 1966 | 212,538 | 1965 | 214,894 | 1964 | 215,975 | 1963 | 217,408 | 1962 | 221,469 | 1961 | 227,167 | 1960 | 228,392 |
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