Year | Value | 2022 | 12,306,025 | 2021 | 12,699,675 | 2020 | 12,999,186 | 2019 | 13,234,386 | 2018 | 13,311,733 | 2017 | 13,308,290 | 2016 | 13,212,944 | 2015 | 12,993,438 | 2014 | 12,761,756 | 2013 | 12,558,021 | 2012 | 12,296,484 | 2011 | 12,019,318 | 2010 | 11,776,559 | 2009 | 11,561,257 | 2008 | 11,284,594 | 2007 | 10,948,254 | 2006 | 10,551,642 | 2005 | 9,849,330 | 2004 | 8,874,047 | 2003 | 7,946,132 | 2002 | 7,283,388 | 2001 | 7,056,557 | 2000 | 7,399,319 | 1999 | 8,182,788 | 1998 | 9,154,540 | 1997 | 10,094,500 | 1996 | 10,644,727 | 1995 | 10,765,216 | 1994 | 10,559,643 | 1993 | 10,084,006 | 1992 | 9,606,674 | 1991 | 9,331,841 | 1990 | 9,332,311 | 1989 | 9,604,908 | 1988 | 10,037,369 | 1987 | 10,354,998 | 1986 | 10,427,297 | 1985 | 10,223,044 | 1984 | 9,751,707 | 1983 | 9,098,821 | 1982 | 8,327,635 | 1981 | 7,560,184 | 1980 | 6,882,427 | 1979 | 6,306,310 | 1978 | 5,843,802 | 1977 | 5,430,792 | 1976 | 5,075,701 | 1975 | 4,911,680 | 1974 | 4,984,224 | 1973 | 5,195,318 | 1972 | 5,545,349 | 1971 | 5,969,266 | 1970 | 6,281,791 | 1969 | 6,408,884 | 1968 | 6,377,552 | 1967 | 6,284,751 | 1966 | 6,180,200 | 1965 | 6,036,917 | 1964 | 5,860,076 | 1963 | 5,703,202 | 1962 | 5,528,107 | 1961 | 5,294,596 | 1960 | 5,087,602 |
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