| Year | Value | | 2022 | 4,344,136 | | 2021 | 4,154,621 | | 2020 | 3,969,306 | | 2019 | 3,790,441 | | 2018 | 3,629,343 | | 2017 | 3,491,474 | | 2016 | 3,382,826 | | 2015 | 3,303,268 | | 2014 | 3,236,570 | | 2013 | 3,168,542 | | 2012 | 3,096,511 | | 2011 | 3,020,941 | | 2010 | 2,942,255 | | 2009 | 2,859,401 | | 2008 | 2,770,151 | | 2007 | 2,667,463 | | 2006 | 2,550,398 | | 2005 | 2,420,671 | | 2004 | 2,273,940 | | 2003 | 2,124,198 | | 2002 | 1,997,053 | | 2001 | 1,895,456 | | 2000 | 1,820,514 | | 1999 | 1,777,412 | | 1998 | 1,750,867 | | 1997 | 1,719,707 | | 1996 | 1,683,763 | | 1995 | 1,649,529 | | 1994 | 1,614,333 | | 1993 | 1,581,630 | | 1992 | 1,552,969 | | 1991 | 1,522,826 | | 1990 | 1,488,867 | | 1989 | 1,453,676 | | 1988 | 1,418,593 | | 1987 | 1,383,826 | | 1986 | 1,351,618 | | 1985 | 1,321,842 | | 1984 | 1,293,497 | | 1983 | 1,266,113 | | 1982 | 1,239,855 | | 1981 | 1,216,117 | | 1980 | 1,195,895 | | 1979 | 1,178,677 | | 1978 | 1,162,544 | | 1977 | 1,145,516 | | 1976 | 1,129,398 | | 1975 | 1,113,059 | | 1974 | 1,091,515 | | 1973 | 1,065,922 | | 1972 | 1,039,848 | | 1971 | 1,022,804 | | 1970 | 1,009,231 | | 1969 | 987,622 | | 1968 | 963,365 | | 1967 | 939,009 | | 1966 | 913,890 | | 1965 | 887,757 | | 1964 | 860,383 | | 1963 | 831,582 | | 1962 | 802,410 | | 1961 | 775,465 | | 1960 | 752,533 |
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