| Year | Value | | 2022 | 5,299,113 | | 2021 | 5,143,826 | | 2020 | 5,034,159 | | 2019 | 4,920,646 | | 2018 | 4,867,015 | | 2017 | 4,828,475 | | 2016 | 4,771,920 | | 2015 | 4,710,313 | | 2014 | 4,681,298 | | 2013 | 4,606,651 | | 2012 | 4,512,507 | | 2011 | 4,399,013 | | 2010 | 4,234,705 | | 2009 | 4,013,286 | | 2008 | 3,798,270 | | 2007 | 3,629,985 | | 2006 | 3,464,687 | | 2005 | 3,350,627 | | 2004 | 3,279,039 | | 2003 | 3,144,087 | | 2002 | 3,013,120 | | 2001 | 2,929,806 | | 2000 | 2,831,115 | | 1999 | 2,725,558 | | 1998 | 2,645,938 | | 1997 | 2,598,542 | | 1996 | 2,541,449 | | 1995 | 2,480,798 | | 1994 | 2,419,662 | | 1993 | 2,354,952 | | 1992 | 2,282,471 | | 1991 | 2,195,449 | | 1990 | 2,116,711 | | 1989 | 2,054,976 | | 1988 | 1,999,827 | | 1987 | 1,941,718 | | 1986 | 1,892,229 | | 1985 | 1,846,546 | | 1984 | 1,802,045 | | 1983 | 1,776,286 | | 1982 | 1,733,520 | | 1981 | 1,689,474 | | 1980 | 1,664,605 | | 1979 | 1,639,083 | | 1978 | 1,606,294 | | 1977 | 1,567,437 | | 1976 | 1,532,508 | | 1975 | 1,492,931 | | 1974 | 1,452,207 | | 1973 | 1,429,108 | | 1972 | 1,413,759 | | 1971 | 1,389,707 | | 1970 | 1,358,137 | | 1969 | 1,323,499 | | 1968 | 1,287,195 | | 1967 | 1,254,378 | | 1966 | 1,225,856 | | 1965 | 1,195,357 | | 1964 | 1,160,164 | | 1963 | 1,128,657 | | 1962 | 1,101,736 | | 1961 | 1,072,528 | | 1960 | 1,041,819 |
|