| Year | Value | | 2022 | 5,342,435 | | 2021 | 5,169,622 | | 2020 | 4,989,358 | | 2019 | 4,786,926 | | 2018 | 4,573,162 | | 2017 | 4,361,982 | | 2016 | 4,154,276 | | 2015 | 3,951,230 | | 2014 | 3,757,792 | | 2013 | 3,581,400 | | 2012 | 3,428,731 | | 2011 | 3,308,049 | | 2010 | 3,218,467 | | 2009 | 3,152,112 | | 2008 | 3,105,602 | | 2007 | 3,072,773 | | 2006 | 3,044,418 | | 2005 | 3,020,174 | | 2004 | 3,001,880 | | 2003 | 2,982,236 | | 2002 | 2,955,947 | | 2001 | 2,922,402 | | 2000 | 2,879,608 | | 1999 | 2,826,283 | | 1998 | 2,763,502 | | 1997 | 2,693,876 | | 1996 | 2,621,436 | | 1995 | 2,548,935 | | 1994 | 2,478,374 | | 1993 | 2,409,996 | | 1992 | 2,341,711 | | 1991 | 2,271,506 | | 1990 | 2,197,668 | | 1989 | 2,119,049 | | 1988 | 2,036,669 | | 1987 | 1,952,139 | | 1986 | 1,868,066 | | 1985 | 1,787,720 | | 1984 | 1,713,743 | | 1983 | 1,647,912 | | 1982 | 1,590,630 | | 1981 | 1,542,560 | | 1980 | 1,504,404 | | 1979 | 1,475,605 | | 1978 | 1,454,158 | | 1977 | 1,436,794 | | 1976 | 1,419,770 | | 1975 | 1,399,439 | | 1974 | 1,373,239 | | 1973 | 1,340,684 | | 1972 | 1,302,551 | | 1971 | 1,259,901 | | 1970 | 1,215,729 | | 1969 | 1,174,006 | | 1968 | 1,135,347 | | 1967 | 1,098,676 | | 1966 | 1,064,329 | | 1965 | 1,034,892 | | 1964 | 999,385 | | 1963 | 953,408 | | 1962 | 906,444 | | 1961 | 860,050 | | 1960 | 815,493 |
|