Year | Value | 2022 | 48,016,020 | 2021 | 48,190,734 | 2020 | 49,899,891 | 2019 | 51,451,132 | 2018 | 51,920,803 | 2017 | 51,081,977 | 2016 | 49,730,292 | 2015 | 48,072,568 | 2014 | 45,922,166 | 2013 | 43,561,690 | 2012 | 40,954,462 | 2011 | 38,418,879 | 2010 | 36,115,703 | 2009 | 33,935,089 | 2008 | 32,155,356 | 2007 | 30,648,610 | 2006 | 29,551,256 | 2005 | 28,863,329 | 2004 | 28,370,795 | 2003 | 28,052,413 | 2002 | 27,892,975 | 2001 | 27,646,638 | 2000 | 27,318,369 | 1999 | 27,048,012 | 1998 | 26,758,012 | 1997 | 26,247,825 | 1996 | 25,528,425 | 1995 | 24,779,692 | 1994 | 24,009,595 | 1993 | 23,161,801 | 1992 | 22,377,630 | 1991 | 21,675,908 | 1990 | 21,022,158 | 1989 | 20,470,109 | 1988 | 19,887,337 | 1987 | 19,235,225 | 1986 | 18,693,260 | 1985 | 18,170,195 | 1984 | 17,540,728 | 1983 | 16,911,540 | 1982 | 16,401,167 | 1981 | 15,969,588 | 1980 | 15,571,325 | 1979 | 15,281,048 | 1978 | 15,089,839 | 1977 | 14,826,576 | 1976 | 14,460,454 | 1975 | 14,066,777 | 1974 | 13,645,477 | 1973 | 13,197,951 | 1972 | 12,807,928 | 1971 | 12,512,125 | 1970 | 12,246,834 | 1969 | 11,975,750 | 1968 | 11,747,778 | 1967 | 11,572,084 | 1966 | 11,370,911 | 1965 | 11,117,294 | 1964 | 10,832,977 | 1963 | 10,528,488 | 1962 | 10,237,667 | 1961 | 10,052,093 | 1960 | 10,066,636 |
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