| Year | Value | | 2022 | 2,224,503 | | 2021 | 2,195,083 | | 2020 | 2,160,209 | | 2019 | 2,117,305 | | 2018 | 2,069,010 | | 2017 | 2,018,776 | | 2016 | 1,968,489 | | 2015 | 1,921,900 | | 2014 | 1,880,378 | | 2013 | 1,841,881 | | 2012 | 1,803,451 | | 2011 | 1,763,207 | | 2010 | 1,720,717 | | 2009 | 1,677,047 | | 2008 | 1,633,098 | | 2007 | 1,587,903 | | 2006 | 1,541,511 | | 2005 | 1,495,862 | | 2004 | 1,452,037 | | 2003 | 1,409,323 | | 2002 | 1,368,848 | | 2001 | 1,333,237 | | 2000 | 1,302,283 | | 1999 | 1,274,332 | | 1998 | 1,250,263 | | 1997 | 1,230,233 | | 1996 | 1,211,408 | | 1995 | 1,191,243 | | 1994 | 1,168,939 | | 1993 | 1,145,130 | | 1992 | 1,120,575 | | 1991 | 1,094,974 | | 1990 | 1,067,328 | | 1989 | 1,037,908 | | 1988 | 1,007,950 | | 1987 | 978,899 | | 1986 | 950,603 | | 1985 | 922,088 | | 1984 | 893,990 | | 1983 | 866,382 | | 1982 | 838,704 | | 1981 | 809,441 | | 1980 | 779,647 | | 1979 | 752,840 | | 1978 | 729,038 | | 1977 | 706,957 | | 1976 | 686,337 | | 1975 | 666,572 | | 1974 | 647,022 | | 1973 | 627,651 | | 1972 | 608,579 | | 1971 | 589,771 | | 1970 | 571,457 | | 1969 | 554,041 | | 1968 | 537,394 | | 1967 | 521,235 | | 1966 | 505,411 | | 1965 | 489,898 | | 1964 | 474,594 | | 1963 | 459,362 | | 1962 | 444,370 | | 1961 | 429,861 | | 1960 | 415,918 |
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