| Year | Value | | 2022 | 4,585,026 | | 2021 | 4,424,575 | | 2020 | 4,259,599 | | 2019 | 4,192,166 | | 2018 | 4,108,843 | | 2017 | 3,985,603 | | 2016 | 3,949,140 | | 2015 | 3,940,100 | | 2014 | 3,858,556 | | 2013 | 3,810,513 | | 2012 | 3,777,323 | | 2011 | 3,762,661 | | 2010 | 3,791,252 | | 2009 | 3,828,165 | | 2008 | 3,875,142 | | 2007 | 3,977,118 | | 2006 | 4,134,699 | | 2005 | 4,326,406 | | 2004 | 4,622,976 | | 2003 | 5,000,387 | | 2002 | 5,318,842 | | 2001 | 5,400,477 | | 2000 | 5,216,092 | | 1999 | 4,942,454 | | 1998 | 4,665,180 | | 1997 | 4,426,880 | | 1996 | 4,387,030 | | 1995 | 4,517,268 | | 1994 | 4,531,200 | | 1993 | 4,404,753 | | 1992 | 4,274,881 | | 1991 | 4,163,362 | | 1990 | 4,088,135 | | 1989 | 4,088,947 | | 1988 | 4,121,849 | | 1987 | 4,122,609 | | 1986 | 4,080,551 | | 1985 | 4,014,878 | | 1984 | 3,946,337 | | 1983 | 3,877,994 | | 1982 | 3,800,425 | | 1981 | 3,725,438 | | 1980 | 3,656,834 | | 1979 | 3,580,585 | | 1978 | 3,492,454 | | 1977 | 3,397,670 | | 1976 | 3,287,982 | | 1975 | 3,181,100 | | 1974 | 3,064,398 | | 1973 | 2,930,713 | | 1972 | 2,811,124 | | 1971 | 2,719,620 | | 1970 | 2,612,603 | | 1969 | 2,561,573 | | 1968 | 2,548,902 | | 1967 | 2,537,340 | | 1966 | 2,511,044 | | 1965 | 2,474,375 | | 1964 | 2,432,311 | | 1963 | 2,384,379 | | 1962 | 2,326,112 | | 1961 | 2,242,704 | | 1960 | 2,149,102 |
|