| Year | Value | | 2022 | 5,817,347 | | 2021 | 5,826,931 | | 2020 | 5,753,030 | | 2019 | 5,702,023 | | 2018 | 5,631,860 | | 2017 | 5,539,024 | | 2016 | 5,469,454 | | 2015 | 5,390,680 | | 2014 | 5,296,640 | | 2013 | 5,173,713 | | 2012 | 5,006,221 | | 2011 | 4,796,370 | | 2010 | 4,413,731 | | 2009 | 3,806,524 | | 2008 | 3,195,649 | | 2007 | 2,756,787 | | 2006 | 2,616,880 | | 2005 | 2,876,836 | | 2004 | 3,459,441 | | 2003 | 4,197,474 | | 2002 | 4,864,451 | | 2001 | 5,174,617 | | 2000 | 5,148,159 | | 1999 | 4,900,817 | | 1998 | 4,497,658 | | 1997 | 4,163,991 | | 1996 | 4,007,301 | | 1995 | 4,057,057 | | 1994 | 4,311,330 | | 1993 | 4,681,303 | | 1992 | 4,964,430 | | 1991 | 5,135,091 | | 1990 | 5,205,061 | | 1989 | 5,157,170 | | 1988 | 4,998,956 | | 1987 | 4,739,459 | | 1986 | 4,388,157 | | 1985 | 3,993,714 | | 1984 | 3,634,546 | | 1983 | 3,379,823 | | 1982 | 3,172,662 | | 1981 | 3,017,701 | | 1980 | 3,037,961 | | 1979 | 3,228,134 | | 1978 | 3,406,739 | | 1977 | 3,648,696 | | 1976 | 3,974,542 | | 1975 | 4,161,772 | | 1974 | 4,170,954 | | 1973 | 4,085,840 | | 1972 | 3,980,394 | | 1971 | 3,845,906 | | 1970 | 3,723,083 | | 1969 | 3,611,738 | | 1968 | 3,514,150 | | 1967 | 3,427,703 | | 1966 | 3,332,221 | | 1965 | 3,268,032 | | 1964 | 3,162,873 | | 1963 | 2,997,604 | | 1962 | 2,821,244 | | 1961 | 2,697,158 | | 1960 | 2,553,414 |
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