Year | Value | 2022 | 482,539 | 2021 | 490,499 | 2020 | 489,510 | 2019 | 474,615 | 2018 | 456,943 | 2017 | 430,186 | 2016 | 393,892 | 2015 | 370,793 | 2014 | 361,551 | 2013 | 350,784 | 2012 | 342,624 | 2011 | 336,903 | 2010 | 330,531 | 2009 | 323,176 | 2008 | 316,964 | 2007 | 314,005 | 2006 | 313,867 | 2005 | 314,710 | 2004 | 315,491 | 2003 | 315,812 | 2002 | 314,781 | 2001 | 312,200 | 2000 | 309,653 | 1999 | 308,634 | 1998 | 309,812 | 1997 | 311,586 | 1996 | 313,950 | 1995 | 316,755 | 1994 | 314,168 | 1993 | 304,495 | 1992 | 294,736 | 1991 | 286,002 | 1990 | 275,702 | 1989 | 271,230 | 1988 | 273,981 | 1987 | 275,816 | 1986 | 274,967 | 1985 | 273,476 | 1984 | 271,701 | 1983 | 268,487 | 1982 | 264,899 | 1981 | 262,170 | 1980 | 259,589 | 1979 | 255,278 | 1978 | 250,219 | 1977 | 245,509 | 1976 | 240,986 | 1975 | 235,191 | 1974 | 228,422 | 1973 | 222,262 | 1972 | 216,531 | 1971 | 211,184 | 1970 | 206,435 | 1969 | 201,958 | 1968 | 197,726 | 1967 | 192,571 | 1966 | 186,468 | 1965 | 180,506 | 1964 | 174,491 | 1963 | 168,490 | 1962 | 163,538 | 1961 | 159,121 | 1960 | 154,916 |
|