| Year | Value | | 2022 | 4,691,287 | | 2021 | 4,584,130 | | 2020 | 4,501,744 | | 2019 | 4,392,602 | | 2018 | 4,263,089 | | 2017 | 4,132,902 | | 2016 | 4,006,838 | | 2015 | 3,880,694 | | 2014 | 3,747,942 | | 2013 | 3,618,310 | | 2012 | 3,499,053 | | 2011 | 3,387,161 | | 2010 | 3,286,599 | | 2009 | 3,199,292 | | 2008 | 3,110,951 | | 2007 | 3,023,575 | | 2006 | 2,936,047 | | 2005 | 2,847,930 | | 2004 | 2,759,267 | | 2003 | 2,668,634 | | 2002 | 2,575,209 | | 2001 | 2,480,903 | | 2000 | 2,387,018 | | 1999 | 2,292,888 | | 1998 | 2,199,523 | | 1997 | 2,110,386 | | 1996 | 2,028,035 | | 1995 | 1,953,827 | | 1994 | 1,887,413 | | 1993 | 1,831,217 | | 1992 | 1,784,450 | | 1991 | 1,740,376 | | 1990 | 1,695,615 | | 1989 | 1,648,544 | | 1988 | 1,598,738 | | 1987 | 1,547,882 | | 1986 | 1,498,640 | | 1985 | 1,452,362 | | 1984 | 1,408,719 | | 1983 | 1,367,284 | | 1982 | 1,327,830 | | 1981 | 1,288,822 | | 1980 | 1,246,581 | | 1979 | 1,197,548 | | 1978 | 1,144,422 | | 1977 | 1,092,030 | | 1976 | 1,042,039 | | 1975 | 994,132 | | 1974 | 948,083 | | 1973 | 904,101 | | 1972 | 862,028 | | 1971 | 822,960 | | 1970 | 790,425 | | 1969 | 764,524 | | 1968 | 741,393 | | 1967 | 719,099 | | 1966 | 696,830 | | 1965 | 673,428 | | 1964 | 647,707 | | 1963 | 619,289 | | 1962 | 589,144 | | 1961 | 559,906 | | 1960 | 533,763 |
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