Year | Value | 2022 | 12,729,796 | 2021 | 12,836,944 | 2020 | 12,992,911 | 2019 | 13,015,521 | 2018 | 13,023,667 | 2017 | 12,927,314 | 2016 | 12,756,419 | 2015 | 12,555,278 | 2014 | 12,355,445 | 2013 | 12,168,764 | 2012 | 12,017,567 | 2011 | 11,889,490 | 2010 | 11,805,660 | 2009 | 11,742,460 | 2008 | 11,642,284 | 2007 | 11,473,855 | 2006 | 11,248,209 | 2005 | 11,000,264 | 2004 | 10,803,132 | 2003 | 10,683,060 | 2002 | 10,667,290 | 2001 | 10,774,851 | 2000 | 10,963,018 | 1999 | 11,107,131 | 1998 | 11,192,766 | 1997 | 11,235,452 | 1996 | 11,200,647 | 1995 | 11,151,644 | 1994 | 11,198,191 | 1993 | 11,355,515 | 1992 | 11,547,080 | 1991 | 11,742,579 | 1990 | 11,923,420 | 1989 | 12,050,680 | 1988 | 12,141,267 | 1987 | 12,197,149 | 1986 | 12,184,115 | 1985 | 12,086,482 | 1984 | 11,952,015 | 1983 | 11,767,509 | 1982 | 11,475,851 | 1981 | 11,341,268 | 1980 | 11,064,342 | 1979 | 10,492,164 | 1978 | 10,068,449 | 1977 | 9,834,300 | 1976 | 9,482,962 | 1975 | 9,109,193 | 1974 | 8,872,214 | 1973 | 8,617,222 | 1972 | 8,271,982 | 1971 | 7,754,398 | 1970 | 7,343,160 | 1969 | 7,142,612 | 1968 | 6,874,111 | 1967 | 6,556,868 | 1966 | 6,415,538 | 1965 | 6,322,738 | 1964 | 6,153,770 | 1963 | 6,133,671 | 1962 | 6,220,954 | 1961 | 6,291,699 | 1960 | 6,445,312 |
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