| Year | Value | | 2022 | 11,078,628 | | 2021 | 10,681,137 | | 2020 | 10,407,665 | | 2019 | 10,073,931 | | 2018 | 9,697,361 | | 2017 | 9,532,365 | | 2016 | 9,533,468 | | 2015 | 9,663,595 | | 2014 | 10,109,590 | | 2013 | 10,836,931 | | 2012 | 11,405,754 | | 2011 | 11,474,102 | | 2010 | 11,277,036 | | 2009 | 11,020,640 | | 2008 | 10,842,593 | | 2007 | 10,455,630 | | 2006 | 9,818,867 | | 2005 | 9,393,082 | | 2004 | 9,141,476 | | 2003 | 8,904,161 | | 2002 | 8,680,305 | | 2001 | 8,461,998 | | 2000 | 8,251,720 | | 1999 | 8,048,389 | | 1998 | 7,847,538 | | 1997 | 7,648,408 | | 1996 | 7,449,878 | | 1995 | 7,251,008 | | 1994 | 7,054,827 | | 1993 | 6,861,420 | | 1992 | 6,670,047 | | 1991 | 6,482,015 | | 1990 | 6,294,282 | | 1989 | 6,105,375 | | 1988 | 5,915,573 | | 1987 | 5,725,450 | | 1986 | 5,536,739 | | 1985 | 5,351,282 | | 1984 | 5,170,379 | | 1983 | 4,994,708 | | 1982 | 4,832,933 | | 1981 | 4,680,883 | | 1980 | 4,528,252 | | 1979 | 4,378,344 | | 1978 | 4,231,993 | | 1977 | 4,090,008 | | 1976 | 3,952,892 | | 1975 | 3,820,331 | | 1974 | 3,692,523 | | 1973 | 3,571,133 | | 1972 | 3,453,372 | | 1971 | 3,336,856 | | 1970 | 3,226,063 | | 1969 | 3,121,394 | | 1968 | 3,021,445 | | 1967 | 2,926,363 | | 1966 | 2,835,244 | | 1965 | 2,747,778 | | 1964 | 2,664,306 | | 1963 | 2,584,970 | | 1962 | 2,509,403 | | 1961 | 2,437,246 | | 1960 | 2,366,122 |
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