Year | Value | 2022 | 30,547,580 | 2021 | 30,034,989 | 2020 | 29,348,627 | 2019 | 28,832,496 | 2018 | 28,506,712 | 2017 | 28,183,426 | 2016 | 27,861,186 | 2015 | 27,610,325 | 2014 | 27,462,106 | 2013 | 27,381,555 | 2012 | 27,330,694 | 2011 | 27,266,399 | 2010 | 27,161,567 | 2009 | 27,026,941 | 2008 | 26,881,544 | 2007 | 26,713,655 | 2006 | 26,518,971 | 2005 | 26,285,110 | 2004 | 26,003,965 | 2003 | 25,682,908 | 2002 | 25,332,178 | 2001 | 24,956,071 | 2000 | 24,559,500 | 1999 | 24,143,157 | 1998 | 23,703,328 | 1997 | 23,249,417 | 1996 | 22,783,969 | 1995 | 22,305,571 | 1994 | 21,794,751 | 1993 | 21,267,359 | 1992 | 20,702,133 | 1991 | 20,130,779 | 1990 | 19,616,530 | 1989 | 19,145,077 | 1988 | 18,720,745 | 1987 | 18,326,204 | 1986 | 17,936,926 | 1985 | 17,540,571 | 1984 | 17,141,610 | 1983 | 16,740,664 | 1982 | 16,347,124 | 1981 | 15,969,792 | 1980 | 15,600,442 | 1979 | 15,238,564 | 1978 | 14,888,770 | 1977 | 14,550,430 | 1976 | 14,230,738 | 1975 | 13,925,541 | 1974 | 13,626,301 | 1973 | 13,335,963 | 1972 | 13,052,220 | 1971 | 12,774,870 | 1970 | 12,501,285 | 1969 | 12,231,874 | 1968 | 11,970,411 | 1967 | 11,715,579 | 1966 | 11,470,199 | 1965 | 11,232,951 | 1964 | 11,002,819 | 1963 | 10,782,717 | 1962 | 10,570,716 | 1961 | 10,365,144 | 1960 | 10,167,941 |
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