Year | Value | 2022 | 42,398,537 | 2021 | 41,972,288 | 2020 | 41,578,108 | 2019 | 41,164,975 | 2018 | 40,572,768 | 2017 | 40,020,312 | 2016 | 39,497,319 | 2015 | 38,962,439 | 2014 | 38,440,841 | 2013 | 37,921,200 | 2012 | 37,432,245 | 2011 | 36,952,354 | 2010 | 36,408,685 | 2009 | 35,854,904 | 2008 | 35,358,365 | 2007 | 34,908,674 | 2006 | 34,626,495 | 2005 | 34,174,902 | 2004 | 33,711,804 | 2003 | 33,249,782 | 2002 | 32,807,631 | 2001 | 32,347,670 | 2000 | 31,867,550 | 1999 | 31,403,302 | 1998 | 30,930,669 | 1997 | 30,445,131 | 1996 | 29,948,597 | 1995 | 29,448,145 | 1994 | 28,943,339 | 1993 | 28,429,090 | 1992 | 27,924,811 | 1991 | 27,427,388 | 1990 | 26,922,234 | 1989 | 26,406,144 | 1988 | 25,884,683 | 1987 | 25,364,816 | 1986 | 24,844,469 | 1985 | 24,312,604 | 1984 | 23,769,878 | 1983 | 23,221,218 | 1982 | 22,674,326 | 1981 | 22,180,542 | 1980 | 21,722,656 | 1979 | 21,243,840 | 1978 | 20,752,799 | 1977 | 20,257,639 | 1976 | 19,763,701 | 1975 | 19,340,945 | 1974 | 18,989,362 | 1973 | 18,632,671 | 1972 | 18,272,677 | 1971 | 17,923,697 | 1970 | 17,552,672 | 1969 | 17,146,299 | 1968 | 16,710,380 | 1967 | 16,262,457 | 1966 | 15,826,237 | 1965 | 15,420,101 | 1964 | 15,038,682 | 1963 | 14,646,590 | 1962 | 14,249,716 | 1961 | 13,859,558 | 1960 | 13,491,673 |
|