Year | Value | 2022 | 187,917 | 2021 | 184,775 | 2020 | 182,267 | 2019 | 180,964 | 2018 | 181,247 | 2017 | 182,837 | 2016 | 183,960 | 2015 | 183,524 | 2014 | 181,873 | 2013 | 179,039 | 2012 | 176,092 | 2011 | 174,477 | 2010 | 173,909 | 2009 | 172,566 | 2008 | 168,933 | 2007 | 164,267 | 2006 | 160,306 | 2005 | 157,500 | 2004 | 157,243 | 2003 | 161,006 | 2002 | 167,400 | 2001 | 173,752 | 2000 | 179,574 | 1999 | 184,948 | 1998 | 189,300 | 1997 | 191,894 | 1996 | 193,464 | 1995 | 194,738 | 1994 | 195,360 | 1993 | 194,529 | 1992 | 193,948 | 1991 | 195,113 | 1990 | 196,944 | 1989 | 198,860 | 1988 | 201,588 | 1987 | 205,181 | 1986 | 207,553 | 1985 | 209,670 | 1984 | 213,748 | 1983 | 218,905 | 1982 | 223,235 | 1981 | 226,832 | 1980 | 227,773 | 1979 | 220,909 | 1978 | 208,142 | 1977 | 190,992 | 1976 | 176,728 | 1975 | 165,341 | 1974 | 156,531 | 1973 | 154,084 | 1972 | 154,320 | 1971 | 150,545 | 1970 | 147,135 | 1969 | 147,496 | 1968 | 143,805 | 1967 | 140,560 | 1966 | 140,708 | 1965 | 143,090 | 1964 | 146,523 | 1963 | 150,896 | 1962 | 154,089 | 1961 | 155,127 | 1960 | 154,682 |
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