| Year | Value | | 2022 | 11,228,821 | | 2021 | 11,117,873 | | 2020 | 10,999,664 | | 2019 | 10,881,882 | | 2018 | 10,765,531 | | 2017 | 10,647,244 | | 2016 | 10,527,592 | | 2015 | 10,405,832 | | 2014 | 10,282,115 | | 2013 | 10,157,051 | | 2012 | 10,030,882 | | 2011 | 9,903,737 | | 2010 | 9,775,755 | | 2009 | 9,648,061 | | 2008 | 9,522,948 | | 2007 | 9,402,206 | | 2006 | 9,284,168 | | 2005 | 9,164,768 | | 2004 | 9,043,127 | | 2003 | 8,919,852 | | 2002 | 8,795,101 | | 2001 | 8,669,040 | | 2000 | 8,540,791 | | 1999 | 8,411,374 | | 1998 | 8,282,126 | | 1997 | 8,150,076 | | 1996 | 8,012,314 | | 1995 | 7,869,753 | | 1994 | 7,723,934 | | 1993 | 7,576,074 | | 1992 | 7,427,340 | | 1991 | 7,278,402 | | 1990 | 7,129,004 | | 1989 | 6,980,033 | | 1988 | 6,834,207 | | 1987 | 6,692,720 | | 1986 | 6,554,325 | | 1985 | 6,417,798 | | 1984 | 6,282,104 | | 1983 | 6,147,213 | | 1982 | 6,014,979 | | 1981 | 5,885,244 | | 1980 | 5,755,800 | | 1979 | 5,625,864 | | 1978 | 5,495,443 | | 1977 | 5,365,074 | | 1976 | 5,235,318 | | 1975 | 5,106,453 | | 1974 | 4,978,582 | | 1973 | 4,851,183 | | 1972 | 4,724,801 | | 1971 | 4,599,841 | | 1970 | 4,475,871 | | 1969 | 4,352,954 | | 1968 | 4,230,877 | | 1967 | 4,108,916 | | 1966 | 3,987,090 | | 1965 | 3,868,712 | | 1964 | 3,752,313 | | 1963 | 3,635,798 | | 1962 | 3,521,164 | | 1961 | 3,408,415 | | 1960 | 3,298,021 |
|