| Year | Value | | 2022 | 9,141,704 | | 2021 | 8,938,987 | | 2020 | 8,738,685 | | 2019 | 8,540,945 | | 2018 | 8,345,772 | | 2017 | 8,153,103 | | 2016 | 7,964,335 | | 2015 | 7,779,195 | | 2014 | 7,597,137 | | 2013 | 7,418,337 | | 2012 | 7,243,152 | | 2011 | 7,072,123 | | 2010 | 6,902,116 | | 2009 | 6,734,651 | | 2008 | 6,568,347 | | 2007 | 6,402,661 | | 2006 | 6,238,013 | | 2005 | 6,074,432 | | 2004 | 5,911,891 | | 2003 | 5,750,534 | | 2002 | 5,588,466 | | 2001 | 5,421,506 | | 2000 | 5,253,870 | | 1999 | 5,089,420 | | 1998 | 4,933,129 | | 1997 | 4,781,726 | | 1996 | 4,635,095 | | 1995 | 4,490,594 | | 1994 | 4,348,255 | | 1993 | 4,208,693 | | 1992 | 4,071,017 | | 1991 | 3,934,691 | | 1990 | 3,800,324 | | 1989 | 3,668,666 | | 1988 | 3,540,636 | | 1987 | 3,416,470 | | 1986 | 3,296,596 | | 1985 | 3,180,971 | | 1984 | 3,069,556 | | 1983 | 2,962,273 | | 1982 | 2,859,308 | | 1981 | 2,761,086 | | 1980 | 2,668,218 | | 1979 | 2,580,838 | | 1978 | 2,498,844 | | 1977 | 2,421,551 | | 1976 | 2,347,670 | | 1975 | 2,276,190 | | 1974 | 2,206,442 | | 1973 | 2,137,989 | | 1972 | 2,070,684 | | 1971 | 2,004,473 | | 1970 | 1,939,050 | | 1969 | 1,874,378 | | 1968 | 1,810,234 | | 1967 | 1,746,816 | | 1966 | 1,684,303 | | 1965 | 1,622,969 | | 1964 | 1,563,113 | | 1963 | 1,491,664 | | 1962 | 1,419,719 | | 1961 | 1,350,747 | | 1960 | 1,284,949 |
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