| Year | Value | | 2022 | 7,103,929 | | 2021 | 7,013,416 | | 2020 | 7,007,761 | | 2019 | 6,962,996 | | 2018 | 6,890,028 | | 2017 | 6,815,687 | | 2016 | 6,752,474 | | 2015 | 6,691,082 | | 2014 | 6,655,859 | | 2013 | 6,603,314 | | 2012 | 6,548,144 | | 2011 | 6,491,507 | | 2010 | 6,482,352 | | 2009 | 6,470,872 | | 2008 | 6,457,255 | | 2007 | 6,447,564 | | 2006 | 6,444,858 | | 2005 | 6,409,413 | | 2004 | 6,373,758 | | 2003 | 6,339,248 | | 2002 | 6,307,139 | | 2001 | 6,263,120 | | 2000 | 6,297,326 | | 1999 | 6,352,957 | | 1998 | 6,415,815 | | 1997 | 6,477,628 | | 1996 | 6,528,757 | | 1995 | 6,541,741 | | 1994 | 6,550,090 | | 1993 | 6,553,895 | | 1992 | 6,557,450 | | 1991 | 6,555,149 | | 1990 | 6,484,711 | | 1989 | 6,393,132 | | 1988 | 6,284,808 | | 1987 | 6,209,133 | | 1986 | 6,133,043 | | 1985 | 6,110,627 | | 1984 | 6,095,759 | | 1983 | 6,079,070 | | 1982 | 6,059,713 | | 1981 | 6,028,261 | | 1980 | 5,966,378 | | 1979 | 5,899,610 | | 1978 | 5,851,095 | | 1977 | 5,802,629 | | 1976 | 5,744,499 | | 1975 | 5,644,413 | | 1974 | 5,535,266 | | 1973 | 5,431,539 | | 1972 | 5,338,874 | | 1971 | 5,251,122 | | 1970 | 5,191,541 | | 1969 | 5,223,145 | | 1968 | 5,256,115 | | 1967 | 5,275,481 | | 1966 | 5,284,252 | | 1965 | 5,334,312 | | 1964 | 5,390,322 | | 1963 | 5,441,341 | | 1962 | 5,492,247 | | 1961 | 5,541,960 | | 1960 | 5,540,976 |
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