| Year | Value | | 2022 | 8,658,337 | | 2021 | 8,513,008 | | 2020 | 8,369,995 | | 2019 | 8,217,386 | | 2018 | 8,058,094 | | 2017 | 7,899,666 | | 2016 | 7,741,971 | | 2015 | 7,584,842 | | 2014 | 7,428,682 | | 2013 | 7,273,140 | | 2012 | 7,114,992 | | 2011 | 6,952,386 | | 2010 | 6,791,318 | | 2009 | 6,632,261 | | 2008 | 6,475,247 | | 2007 | 6,320,212 | | 2006 | 6,167,232 | | 2005 | 6,017,470 | | 2004 | 5,871,784 | | 2003 | 5,728,610 | | 2002 | 5,588,053 | | 2001 | 5,449,335 | | 2000 | 5,309,144 | | 1999 | 5,170,101 | | 1998 | 5,033,397 | | 1997 | 4,899,823 | | 1996 | 4,768,214 | | 1995 | 4,638,230 | | 1994 | 4,509,675 | | 1993 | 4,381,764 | | 1992 | 4,254,823 | | 1991 | 4,099,087 | | 1990 | 3,943,852 | | 1989 | 3,792,215 | | 1988 | 3,644,465 | | 1987 | 3,500,517 | | 1986 | 3,361,104 | | 1985 | 3,225,956 | | 1984 | 3,094,953 | | 1983 | 2,967,644 | | 1982 | 2,844,104 | | 1981 | 2,723,887 | | 1980 | 2,607,109 | | 1979 | 2,493,421 | | 1978 | 2,383,285 | | 1977 | 2,276,768 | | 1976 | 2,182,910 | | 1975 | 2,118,489 | | 1974 | 2,055,844 | | 1973 | 1,995,019 | | 1972 | 1,936,169 | | 1971 | 1,879,151 | | 1970 | 1,824,005 | | 1969 | 1,770,663 | | 1968 | 1,719,093 | | 1967 | 1,669,227 | | 1966 | 1,621,045 | | 1965 | 1,574,471 | | 1964 | 1,529,467 | | 1963 | 1,485,804 | | 1962 | 1,443,527 | | 1961 | 1,402,588 | | 1960 | 1,362,957 |
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