| Year | Value | | 2022 | 8,609,835 | | 2021 | 8,447,308 | | 2020 | 8,269,841 | | 2019 | 8,013,641 | | 2018 | 7,738,254 | | 2017 | 7,479,548 | | 2016 | 7,228,671 | | 2015 | 6,968,638 | | 2014 | 6,701,890 | | 2013 | 6,444,240 | | 2012 | 6,215,259 | | 2011 | 5,980,585 | | 2010 | 5,743,083 | | 2009 | 5,481,947 | | 2008 | 5,231,474 | | 2007 | 4,985,902 | | 2006 | 4,748,705 | | 2005 | 4,523,072 | | 2004 | 4,312,394 | | 2003 | 4,120,605 | | 2002 | 3,932,409 | | 2001 | 3,722,471 | | 2000 | 3,513,768 | | 1999 | 3,408,374 | | 1998 | 3,442,954 | | 1997 | 3,533,727 | | 1996 | 3,625,357 | | 1995 | 3,671,429 | | 1994 | 3,632,191 | | 1993 | 3,541,313 | | 1992 | 3,429,781 | | 1991 | 3,320,354 | | 1990 | 3,216,988 | | 1989 | 3,105,636 | | 1988 | 2,991,569 | | 1987 | 2,881,804 | | 1986 | 2,783,610 | | 1985 | 2,692,274 | | 1984 | 2,596,781 | | 1983 | 2,505,985 | | 1982 | 2,411,636 | | 1981 | 2,312,203 | | 1980 | 2,224,019 | | 1979 | 2,142,510 | | 1978 | 2,073,375 | | 1977 | 2,015,601 | | 1976 | 1,967,996 | | 1975 | 1,941,133 | | 1974 | 1,925,959 | | 1973 | 1,909,723 | | 1972 | 1,890,466 | | 1971 | 1,868,999 | | 1970 | 1,851,569 | | 1969 | 1,831,593 | | 1968 | 1,811,008 | | 1967 | 1,786,747 | | 1966 | 1,755,714 | | 1965 | 1,726,616 | | 1964 | 1,689,487 | | 1963 | 1,658,068 | | 1962 | 1,637,696 | | 1961 | 1,602,629 | | 1960 | 1,565,834 |
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