Year | Value | 2022 | 295,932 | 2021 | 296,257 | 2020 | 296,083 | 2019 | 294,331 | 2018 | 293,930 | 2017 | 295,120 | 2016 | 297,581 | 2015 | 299,225 | 2014 | 303,002 | 2013 | 311,855 | 2012 | 321,448 | 2011 | 329,831 | 2010 | 340,309 | 2009 | 351,418 | 2008 | 361,648 | 2007 | 374,002 | 2006 | 388,040 | 2005 | 403,178 | 2004 | 416,766 | 2003 | 424,797 | 2002 | 427,927 | 2001 | 428,491 | 2000 | 425,956 | 1999 | 422,095 | 1998 | 418,795 | 1997 | 415,464 | 1996 | 413,444 | 1995 | 413,198 | 1994 | 413,773 | 1993 | 414,628 | 1992 | 414,420 | 1991 | 409,314 | 1990 | 396,667 | 1989 | 380,723 | 1988 | 364,176 | 1987 | 345,671 | 1986 | 326,134 | 1985 | 306,673 | 1984 | 289,295 | 1983 | 275,474 | 1982 | 266,244 | 1981 | 263,399 | 1980 | 265,194 | 1979 | 267,390 | 1978 | 267,329 | 1977 | 265,124 | 1976 | 259,184 | 1975 | 249,336 | 1974 | 241,851 | 1973 | 238,122 | 1972 | 236,286 | 1971 | 238,471 | 1970 | 245,709 | 1969 | 253,466 | 1968 | 258,890 | 1967 | 263,057 | 1966 | 267,464 | 1965 | 275,272 | 1964 | 289,335 | 1963 | 309,379 | 1962 | 332,400 | 1961 | 353,255 | 1960 | 368,170 |
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