| Year | Value | | 2022 | 7,534,918 | | 2021 | 7,442,343 | | 2020 | 7,364,971 | | 2019 | 7,294,417 | | 2018 | 7,229,437 | | 2017 | 7,148,678 | | 2016 | 7,032,533 | | 2015 | 6,896,952 | | 2014 | 6,756,171 | | 2013 | 6,612,393 | | 2012 | 6,482,475 | | 2011 | 6,364,510 | | 2010 | 6,254,031 | | 2009 | 6,164,939 | | 2008 | 6,128,541 | | 2007 | 6,087,484 | | 2006 | 6,023,710 | | 2005 | 5,952,925 | | 2004 | 5,853,509 | | 2003 | 5,762,314 | | 2002 | 5,687,947 | | 2001 | 5,604,145 | | 2000 | 5,482,979 | | 1999 | 5,336,045 | | 1998 | 5,183,433 | | 1997 | 5,019,041 | | 1996 | 4,850,063 | | 1995 | 4,680,415 | | 1994 | 4,504,094 | | 1993 | 4,327,057 | | 1992 | 4,158,483 | | 1991 | 4,012,037 | | 1990 | 3,891,049 | | 1989 | 3,786,739 | | 1988 | 3,693,232 | | 1987 | 3,607,222 | | 1986 | 3,526,384 | | 1985 | 3,450,869 | | 1984 | 3,378,258 | | 1983 | 3,302,452 | | 1982 | 3,217,472 | | 1981 | 3,118,666 | | 1980 | 3,002,302 | | 1979 | 2,864,662 | | 1978 | 2,722,088 | | 1977 | 2,606,087 | | 1976 | 2,517,869 | | 1975 | 2,449,655 | | 1974 | 2,429,233 | | 1973 | 2,440,979 | | 1972 | 2,435,711 | | 1971 | 2,469,062 | | 1970 | 2,491,412 | | 1969 | 2,449,030 | | 1968 | 2,402,239 | | 1967 | 2,352,903 | | 1966 | 2,304,192 | | 1965 | 2,253,646 | | 1964 | 2,200,956 | | 1963 | 2,147,905 | | 1962 | 2,093,312 | | 1961 | 2,038,241 | | 1960 | 1,984,333 |
|