Year | Value | 2022 | 51,874,024 | 2021 | 51,516,562 | 2020 | 50,930,662 | 2019 | 50,187,406 | 2018 | 49,276,961 | 2017 | 48,351,671 | 2016 | 47,625,955 | 2015 | 47,119,728 | 2014 | 46,677,947 | 2013 | 46,237,930 | 2012 | 45,782,417 | 2011 | 45,308,899 | 2010 | 44,816,108 | 2009 | 44,313,917 | 2008 | 43,815,313 | 2007 | 43,306,582 | 2006 | 42,772,910 | 2005 | 42,220,940 | 2004 | 41,648,268 | 2003 | 41,057,687 | 2002 | 40,454,050 | 2001 | 39,837,875 | 2000 | 39,215,135 | 1999 | 38,585,033 | 1998 | 37,944,414 | 1997 | 37,291,946 | 1996 | 36,632,573 | 1995 | 35,970,101 | 1994 | 35,295,461 | 1993 | 34,614,735 | 1992 | 33,939,039 | 1991 | 33,272,628 | 1990 | 32,601,393 | 1989 | 31,923,117 | 1988 | 31,256,727 | 1987 | 30,603,048 | 1986 | 29,960,101 | 1985 | 29,326,260 | 1984 | 28,689,032 | 1983 | 28,042,329 | 1982 | 27,405,194 | 1981 | 26,785,982 | 1980 | 26,176,195 | 1979 | 25,579,323 | 1978 | 25,003,608 | 1977 | 24,443,926 | 1976 | 23,913,002 | 1975 | 23,403,731 | 1974 | 22,897,871 | 1973 | 22,396,318 | 1972 | 21,898,055 | 1971 | 21,405,413 | 1970 | 20,905,254 | 1969 | 20,392,264 | 1968 | 19,872,503 | 1967 | 19,343,961 | 1966 | 18,811,407 | 1965 | 18,275,814 | 1964 | 17,739,754 | 1963 | 17,210,956 | 1962 | 16,691,282 | 1961 | 16,182,414 | 1960 | 15,687,688 |
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