Year | Value | 2022 | 322,460 | 2021 | 326,817 | 2020 | 331,402 | 2019 | 336,379 | 2018 | 339,690 | 2017 | 339,843 | 2016 | 336,335 | 2015 | 329,421 | 2014 | 319,756 | 2013 | 308,743 | 2012 | 298,830 | 2011 | 290,539 | 2010 | 282,628 | 2009 | 274,701 | 2008 | 266,240 | 2007 | 258,615 | 2006 | 252,149 | 2005 | 247,668 | 2004 | 245,782 | 2003 | 245,547 | 2002 | 245,907 | 2001 | 246,776 | 2000 | 247,598 | 1999 | 247,133 | 1998 | 245,448 | 1997 | 242,386 | 1996 | 237,359 | 1995 | 229,625 | 1994 | 220,855 | 1993 | 212,281 | 1992 | 204,418 | 1991 | 199,058 | 1990 | 196,284 | 1989 | 194,468 | 1988 | 192,789 | 1987 | 191,342 | 1986 | 189,758 | 1985 | 187,766 | 1984 | 185,584 | 1983 | 183,204 | 1982 | 180,789 | 1981 | 178,471 | 1980 | 176,222 | 1979 | 174,252 | 1978 | 173,478 | 1977 | 173,619 | 1976 | 174,446 | 1975 | 175,772 | 1974 | 174,217 | 1973 | 169,292 | 1972 | 163,444 | 1971 | 157,390 | 1970 | 151,254 | 1969 | 149,518 | 1968 | 152,924 | 1967 | 157,389 | 1966 | 161,311 | 1965 | 164,611 | 1964 | 166,587 | 1963 | 166,899 | 1962 | 166,633 | 1961 | 166,319 | 1960 | 165,558 |
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