Year | Value | 2022 | 24,713,123 | 2021 | 23,720,672 | 2020 | 23,413,105 | 2019 | 23,253,932 | 2018 | 22,875,391 | 2017 | 22,489,021 | 2016 | 22,183,095 | 2015 | 21,838,635 | 2014 | 21,492,257 | 2013 | 21,181,655 | 2012 | 20,895,734 | 2011 | 20,641,392 | 2010 | 20,449,606 | 2009 | 20,300,613 | 2008 | 20,191,127 | 2007 | 20,063,902 | 2006 | 19,941,758 | 2005 | 19,783,745 | 2004 | 19,545,618 | 2003 | 19,415,289 | 2002 | 19,331,030 | 2001 | 19,107,277 | 2000 | 18,894,740 | 1999 | 18,536,422 | 1998 | 17,661,328 | 1997 | 16,548,862 | 1996 | 15,555,794 | 1995 | 14,687,090 | 1994 | 14,293,481 | 1993 | 14,572,795 | 1992 | 15,145,117 | 1991 | 15,635,201 | 1990 | 15,905,266 | 1989 | 15,895,785 | 1988 | 15,680,992 | 1987 | 15,377,266 | 1986 | 15,004,370 | 1985 | 14,633,273 | 1984 | 14,252,588 | 1983 | 13,847,553 | 1982 | 13,492,511 | 1981 | 13,200,114 | 1980 | 12,913,033 | 1979 | 12,605,370 | 1978 | 12,291,775 | 1977 | 11,932,787 | 1976 | 11,560,747 | 1975 | 11,217,394 | 1974 | 10,883,170 | 1973 | 10,567,756 | 1972 | 10,236,103 | 1971 | 9,919,128 | 1970 | 9,627,543 | 1969 | 9,396,556 | 1968 | 9,209,030 | 1967 | 9,035,090 | 1966 | 8,824,375 | 1965 | 8,598,451 | 1964 | 8,372,347 | 1963 | 8,123,726 | 1962 | 7,885,403 | 1961 | 7,660,633 | 1960 | 7,435,880 |
|