| Year | Value | | 2022 | 8,516,834 | | 2021 | 8,290,605 | | 2020 | 8,061,683 | | 2019 | 7,792,589 | | 2018 | 7,505,227 | | 2017 | 7,244,379 | | 2016 | 7,008,149 | | 2015 | 6,785,128 | | 2014 | 6,587,771 | | 2013 | 6,404,462 | | 2012 | 6,208,520 | | 2011 | 6,009,725 | | 2010 | 5,820,514 | | 2009 | 5,646,775 | | 2008 | 5,492,058 | | 2007 | 5,350,103 | | 2006 | 5,214,142 | | 2005 | 5,082,759 | | 2004 | 4,957,672 | | 2003 | 4,841,102 | | 2002 | 4,732,573 | | 2001 | 4,634,007 | | 2000 | 4,546,266 | | 1999 | 4,464,987 | | 1998 | 4,387,662 | | 1997 | 4,312,110 | | 1996 | 4,225,954 | | 1995 | 4,129,290 | | 1994 | 4,037,785 | | 1993 | 3,941,941 | | 1992 | 3,834,115 | | 1991 | 3,730,662 | | 1990 | 3,632,651 | | 1989 | 3,535,251 | | 1988 | 3,443,701 | | 1987 | 3,354,878 | | 1986 | 3,266,551 | | 1985 | 3,175,901 | | 1984 | 3,086,745 | | 1983 | 3,011,058 | | 1982 | 2,938,274 | | 1981 | 2,861,540 | | 1980 | 2,790,990 | | 1979 | 2,720,411 | | 1978 | 2,644,149 | | 1977 | 2,573,055 | | 1976 | 2,506,178 | | 1975 | 2,439,638 | | 1974 | 2,375,156 | | 1973 | 2,312,497 | | 1972 | 2,252,777 | | 1971 | 2,196,258 | | 1970 | 2,141,965 | | 1969 | 2,090,299 | | 1968 | 2,041,879 | | 1967 | 1,996,713 | | 1966 | 1,953,944 | | 1965 | 1,911,894 | | 1964 | 1,869,727 | | 1963 | 1,827,347 | | 1962 | 1,784,957 | | 1961 | 1,742,929 | | 1960 | 1,702,170 |
|