Year | Value | 2022 | 12,123,295 | 2021 | 11,885,118 | 2020 | 11,660,162 | 2019 | 11,383,757 | 2018 | 11,224,320 | 2017 | 11,143,786 | 2016 | 11,206,119 | 2015 | 11,396,791 | 2014 | 11,591,013 | 2013 | 11,723,883 | 2012 | 11,795,089 | 2011 | 11,766,490 | 2010 | 11,729,786 | 2009 | 11,795,213 | 2008 | 11,967,572 | 2007 | 12,171,695 | 2006 | 12,388,164 | 2005 | 12,575,305 | 2004 | 12,665,597 | 2003 | 12,671,213 | 2002 | 12,660,761 | 2001 | 12,602,330 | 2000 | 12,473,293 | 1999 | 12,298,493 | 1998 | 12,086,079 | 1997 | 11,790,095 | 1996 | 11,632,846 | 1995 | 11,347,220 | 1994 | 10,781,948 | 1993 | 10,359,415 | 1992 | 10,122,851 | 1991 | 9,762,496 | 1990 | 9,357,330 | 1989 | 9,088,112 | 1988 | 8,797,363 | 1987 | 8,450,257 | 1986 | 7,956,511 | 1985 | 7,607,020 | 1984 | 7,450,199 | 1983 | 7,199,570 | 1982 | 6,901,716 | 1981 | 6,760,549 | 1980 | 6,648,701 | 1979 | 6,468,366 | 1978 | 6,424,154 | 1977 | 6,476,281 | 1976 | 6,517,218 | 1975 | 6,659,183 | 1974 | 6,973,694 | 1973 | 7,147,439 | 1972 | 7,165,353 | 1971 | 7,184,913 | 1970 | 7,050,582 | 1969 | 6,780,748 | 1968 | 6,719,534 | 1967 | 6,760,972 | 1966 | 6,621,379 | 1965 | 6,587,991 | 1964 | 6,713,077 | 1963 | 6,594,740 | 1962 | 6,338,837 | 1961 | 6,280,846 | 1960 | 6,212,250 |
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