Year | Value | 2022 | 33,777,188 | 2021 | 34,251,820 | 2020 | 34,715,730 | 2019 | 35,160,432 | 2018 | 35,600,176 | 2017 | 36,016,287 | 2016 | 36,399,340 | 2015 | 36,768,187 | 2014 | 37,119,178 | 2013 | 37,438,158 | 2012 | 37,728,614 | 2011 | 37,999,578 | 2010 | 38,329,783 | 2009 | 38,963,691 | 2008 | 39,560,727 | 2007 | 40,129,466 | 2006 | 40,671,775 | 2005 | 41,196,931 | 2004 | 41,688,770 | 2003 | 42,143,240 | 2002 | 42,557,735 | 2001 | 42,933,125 | 2000 | 43,272,519 | 1999 | 43,104,786 | 1998 | 42,730,777 | 1997 | 42,313,023 | 1996 | 41,877,419 | 1995 | 41,433,371 | 1994 | 40,965,466 | 1993 | 40,481,390 | 1992 | 39,992,259 | 1991 | 39,498,232 | 1990 | 38,978,003 | 1989 | 38,479,322 | 1988 | 37,976,798 | 1987 | 37,455,441 | 1986 | 36,924,241 | 1985 | 36,380,292 | 1984 | 35,821,831 | 1983 | 35,252,577 | 1982 | 34,674,331 | 1981 | 34,088,027 | 1980 | 33,484,152 | 1979 | 33,014,148 | 1978 | 32,589,568 | 1977 | 32,141,420 | 1976 | 31,677,548 | 1975 | 31,189,436 | 1974 | 30,658,302 | 1973 | 30,095,912 | 1972 | 29,508,549 | 1971 | 28,915,626 | 1970 | 28,315,194 | 1969 | 27,597,685 | 1968 | 26,857,917 | 1967 | 26,125,666 | 1966 | 25,401,149 | 1965 | 24,683,838 | 1964 | 23,977,843 | 1963 | 23,291,299 | 1962 | 22,624,806 | 1961 | 21,979,976 | 1960 | 21,364,504 |
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