Year | Value | 2022 | 37,343,545 | 2021 | 37,957,415 | 2020 | 38,599,270 | 2019 | 38,965,595 | 2018 | 39,253,151 | 2017 | 39,431,851 | 2016 | 39,353,439 | 2015 | 39,200,518 | 2014 | 39,304,234 | 2013 | 39,519,627 | 2012 | 39,683,001 | 2011 | 39,890,350 | 2010 | 40,089,503 | 2009 | 39,904,148 | 2008 | 39,540,314 | 2007 | 39,107,015 | 2006 | 38,634,261 | 2005 | 38,108,138 | 2004 | 37,573,348 | 2003 | 37,005,808 | 2002 | 36,463,765 | 2001 | 36,143,554 | 2000 | 35,804,169 | 1999 | 35,370,093 | 1998 | 35,233,905 | 1997 | 35,297,834 | 1996 | 34,907,595 | 1995 | 33,803,865 | 1994 | 32,552,782 | 1993 | 31,312,407 | 1992 | 29,950,397 | 1991 | 28,858,720 | 1990 | 28,610,159 | 1989 | 28,698,809 | 1988 | 28,552,380 | 1987 | 28,411,353 | 1986 | 28,287,718 | 1985 | 28,029,676 | 1984 | 27,652,321 | 1983 | 27,209,127 | 1982 | 26,793,081 | 1981 | 26,512,712 | 1980 | 26,421,034 | 1979 | 26,559,875 | 1978 | 26,770,882 | 1977 | 26,936,247 | 1976 | 27,110,032 | 1975 | 27,198,849 | 1974 | 27,089,974 | 1973 | 27,123,543 | 1972 | 27,202,355 | 1971 | 27,047,030 | 1970 | 26,818,404 | 1969 | 26,392,234 | 1968 | 25,251,030 | 1967 | 23,790,718 | 1966 | 22,555,150 | 1965 | 21,569,149 | 1964 | 21,297,805 | 1963 | 21,905,271 | 1962 | 22,893,553 | 1961 | 23,803,881 | 1960 | 24,413,404 |
|