| Year | Value | | 2022 | 789,699 | | 2021 | 777,733 | | 2020 | 764,433 | | 2019 | 749,839 | | 2018 | 733,677 | | 2017 | 715,351 | | 2016 | 696,648 | | 2015 | 678,095 | | 2014 | 660,035 | | 2013 | 643,214 | | 2012 | 627,774 | | 2011 | 614,397 | | 2010 | 603,465 | | 2009 | 599,684 | | 2008 | 592,489 | | 2007 | 586,870 | | 2006 | 582,592 | | 2005 | 579,543 | | 2004 | 578,194 | | 2003 | 579,029 | | 2002 | 580,071 | | 2001 | 579,199 | | 2000 | 575,876 | | 1999 | 569,723 | | 1998 | 560,800 | | 1997 | 549,585 | | 1996 | 537,357 | | 1995 | 524,941 | | 1994 | 512,207 | | 1993 | 498,714 | | 1992 | 485,062 | | 1991 | 471,972 | | 1990 | 460,143 | | 1989 | 449,740 | | 1988 | 440,798 | | 1987 | 432,853 | | 1986 | 424,293 | | 1985 | 414,296 | | 1984 | 403,075 | | 1983 | 390,423 | | 1982 | 376,636 | | 1981 | 363,072 | | 1980 | 350,710 | | 1979 | 339,306 | | 1978 | 328,488 | | 1977 | 318,328 | | 1976 | 308,486 | | 1975 | 298,561 | | 1974 | 288,573 | | 1973 | 278,698 | | 1972 | 268,878 | | 1971 | 259,259 | | 1970 | 249,628 | | 1969 | 240,046 | | 1968 | 230,563 | | 1967 | 221,096 | | 1966 | 212,090 | | 1965 | 203,799 | | 1964 | 196,226 | | 1963 | 189,361 | | 1962 | 182,951 | | 1961 | 176,315 | | 1960 | 169,122 |
|