Year | Value | 2022 | 356,388 | 2021 | 351,517 | 2020 | 345,724 | 2019 | 337,356 | 2018 | 326,808 | 2017 | 315,255 | 2016 | 303,914 | 2015 | 292,346 | 2014 | 280,234 | 2013 | 269,052 | 2012 | 259,263 | 2011 | 249,654 | 2010 | 242,540 | 2009 | 239,840 | 2008 | 240,339 | 2007 | 243,295 | 2006 | 243,859 | 2005 | 236,291 | 2004 | 228,754 | 2003 | 225,138 | 2002 | 220,276 | 2001 | 222,160 | 2000 | 237,744 | 1999 | 253,791 | 1998 | 255,476 | 1997 | 247,269 | 1996 | 233,258 | 1995 | 212,430 | 1994 | 190,269 | 1993 | 178,505 | 1992 | 178,404 | 1991 | 181,594 | 1990 | 186,823 | 1989 | 192,873 | 1988 | 197,916 | 1987 | 200,580 | 1986 | 200,425 | 1985 | 198,127 | 1984 | 194,445 | 1983 | 190,168 | 1982 | 187,197 | 1981 | 186,251 | 1980 | 185,026 | 1979 | 180,594 | 1978 | 169,542 | 1977 | 153,357 | 1976 | 136,573 | 1975 | 124,098 | 1974 | 123,132 | 1973 | 134,877 | 1972 | 153,541 | 1971 | 172,931 | 1970 | 189,216 | 1969 | 199,223 | 1968 | 204,043 | 1967 | 206,689 | 1966 | 209,282 | 1965 | 212,829 | 1964 | 215,967 | 1963 | 218,891 | 1962 | 222,247 | 1961 | 225,102 | 1960 | 225,789 |
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