| Year | Value | | 2022 | 8,454,540 | | 2021 | 8,449,029 | | 2020 | 8,454,695 | | 2019 | 8,475,436 | | 2018 | 8,517,076 | | 2017 | 8,579,387 | | 2016 | 8,647,460 | | 2015 | 8,711,165 | | 2014 | 8,770,754 | | 2013 | 8,815,511 | | 2012 | 8,838,189 | | 2011 | 8,833,438 | | 2010 | 8,797,037 | | 2009 | 8,725,035 | | 2008 | 8,620,190 | | 2007 | 8,485,271 | | 2006 | 8,328,462 | | 2005 | 8,159,435 | | 2004 | 7,985,108 | | 2003 | 7,819,501 | | 2002 | 7,668,023 | | 2001 | 7,526,673 | | 2000 | 7,399,213 | | 1999 | 7,285,493 | | 1998 | 7,177,237 | | 1997 | 7,079,810 | | 1996 | 7,004,718 | | 1995 | 6,947,836 | | 1994 | 6,905,229 | | 1993 | 6,870,022 | | 1992 | 6,824,011 | | 1991 | 6,753,873 | | 1990 | 6,655,065 | | 1989 | 6,527,432 | | 1988 | 6,377,417 | | 1987 | 6,213,547 | | 1986 | 6,041,849 | | 1985 | 5,866,204 | | 1984 | 5,690,296 | | 1983 | 5,515,340 | | 1982 | 5,344,297 | | 1981 | 5,180,539 | | 1980 | 5,022,781 | | 1979 | 4,871,997 | | 1978 | 4,713,058 | | 1977 | 4,533,317 | | 1976 | 4,341,716 | | 1975 | 4,142,351 | | 1974 | 3,943,477 | | 1973 | 3,770,164 | | 1972 | 3,634,762 | | 1971 | 3,527,863 | | 1970 | 3,441,690 | | 1969 | 3,366,494 | | 1968 | 3,294,235 | | 1967 | 3,220,253 | | 1966 | 3,145,046 | | 1965 | 3,071,292 | | 1964 | 3,000,705 | | 1963 | 2,938,042 | | 1962 | 2,885,362 | | 1961 | 2,838,961 | | 1960 | 2,799,018 |
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