Year | Value | 2022 | 15,228,162 | 2021 | 15,197,528 | 2020 | 15,112,898 | 2019 | 14,993,207 | 2018 | 14,861,065 | 2017 | 14,709,907 | 2016 | 14,556,174 | 2015 | 14,405,904 | 2014 | 14,289,277 | 2013 | 14,204,990 | 2012 | 14,101,933 | 2011 | 13,935,624 | 2010 | 13,570,243 | 2009 | 13,038,364 | 2008 | 12,566,193 | 2007 | 12,082,854 | 2006 | 11,699,694 | 2005 | 11,691,860 | 2004 | 11,870,365 | 2003 | 11,952,301 | 2002 | 12,050,882 | 2001 | 12,153,711 | 2000 | 12,150,604 | 1999 | 12,063,566 | 1998 | 11,951,928 | 1997 | 11,871,420 | 1996 | 11,829,378 | 1995 | 11,831,769 | 1994 | 11,856,263 | 1993 | 11,903,680 | 1992 | 11,947,425 | 1991 | 11,958,607 | 1990 | 11,946,599 | 1989 | 11,933,733 | 1988 | 11,938,001 | 1987 | 11,968,021 | 1986 | 12,014,299 | 1985 | 12,013,050 | 1984 | 11,754,587 | 1983 | 11,054,656 | 1982 | 10,112,972 | 1981 | 9,194,960 | 1980 | 8,478,088 | 1979 | 8,362,891 | 1978 | 8,931,505 | 1977 | 9,771,063 | 1976 | 10,553,810 | 1975 | 11,121,408 | 1974 | 11,373,979 | 1973 | 11,393,366 | 1972 | 11,335,751 | 1971 | 11,261,284 | 1970 | 11,161,983 | 1969 | 11,000,679 | 1968 | 10,812,975 | 1967 | 10,640,777 | 1966 | 10,481,679 | 1965 | 10,341,859 | 1964 | 10,177,778 | 1963 | 9,974,445 | 1962 | 9,767,486 | 1961 | 9,562,513 | 1960 | 9,334,061 |
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