Year | Value | 2022 | 56,378,923 | 2021 | 56,867,044 | 2020 | 57,470,836 | 2019 | 57,592,357 | 2018 | 57,994,170 | 2017 | 58,333,412 | 2016 | 58,598,755 | 2015 | 58,788,250 | 2014 | 58,955,597 | 2013 | 59,106,371 | 2012 | 59,263,241 | 2011 | 59,375,348 | 2010 | 59,477,423 | 2009 | 59,495,270 | 2008 | 59,486,862 | 2007 | 59,435,929 | 2006 | 59,380,586 | 2005 | 59,316,092 | 2004 | 59,272,576 | 2003 | 59,231,337 | 2002 | 59,224,903 | 2001 | 59,176,653 | 2000 | 59,093,274 | 1999 | 59,318,323 | 1998 | 59,647,910 | 1997 | 59,962,727 | 1996 | 60,247,274 | 1995 | 60,559,606 | 1994 | 60,847,887 | 1993 | 61,112,155 | 1992 | 61,314,541 | 1991 | 61,471,853 | 1990 | 61,656,881 | 1989 | 61,485,081 | 1988 | 61,266,559 | 1987 | 61,073,788 | 1986 | 60,888,123 | 1985 | 60,684,895 | 1984 | 60,503,262 | 1983 | 60,332,364 | 1982 | 60,135,341 | 1981 | 59,913,573 | 1980 | 59,673,829 | 1979 | 59,207,469 | 1978 | 58,579,920 | 1977 | 57,982,322 | 1976 | 57,423,878 | 1975 | 56,902,406 | 1974 | 56,365,499 | 1973 | 55,874,046 | 1972 | 55,364,268 | 1971 | 54,795,508 | 1970 | 54,129,627 | 1969 | 54,047,876 | 1968 | 54,242,804 | 1967 | 54,423,243 | 1966 | 54,551,297 | 1965 | 54,639,947 | 1964 | 54,673,014 | 1963 | 54,626,596 | 1962 | 54,549,307 | 1961 | 54,414,785 | 1960 | 54,208,527 |
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