Year | Value | 2022 | 12,679,332 | 2021 | 12,689,188 | 2020 | 12,469,957 | 2019 | 12,270,217 | 2018 | 12,077,892 | 2017 | 11,835,729 | 2016 | 11,582,567 | 2015 | 11,351,521 | 2014 | 11,132,372 | 2013 | 10,833,969 | 2012 | 10,452,863 | 2011 | 10,024,889 | 2010 | 9,312,172 | 2009 | 8,297,546 | 2008 | 7,331,341 | 2007 | 6,674,473 | 2006 | 6,502,708 | 2005 | 6,920,673 | 2004 | 7,798,980 | 2003 | 8,896,260 | 2002 | 9,914,308 | 2001 | 10,428,444 | 2000 | 10,427,060 | 1999 | 10,051,432 | 1998 | 9,400,563 | 1997 | 8,804,902 | 1996 | 8,467,252 | 1995 | 8,476,739 | 1994 | 8,836,332 | 1993 | 9,391,296 | 1992 | 9,834,521 | 1991 | 10,093,551 | 1990 | 10,183,036 | 1989 | 10,091,867 | 1988 | 9,823,200 | 1987 | 9,379,300 | 1986 | 8,803,920 | 1985 | 8,147,877 | 1984 | 7,519,365 | 1983 | 6,998,400 | 1982 | 6,515,328 | 1981 | 6,122,565 | 1980 | 6,021,427 | 1979 | 6,239,743 | 1978 | 6,520,696 | 1977 | 6,946,137 | 1976 | 7,509,133 | 1975 | 7,851,370 | 1974 | 7,893,397 | 1973 | 7,759,717 | 1972 | 7,565,585 | 1971 | 7,322,993 | 1970 | 7,125,017 | 1969 | 6,951,456 | 1968 | 6,796,327 | 1967 | 6,663,771 | 1966 | 6,494,832 | 1965 | 6,377,453 | 1964 | 6,209,724 | 1963 | 5,922,281 | 1962 | 5,602,535 | 1961 | 5,351,045 | 1960 | 5,062,808 |
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