Year | Value | 2022 | 36,662,332 | 2021 | 36,262,976 | 2020 | 36,220,760 | 2019 | 36,334,914 | 2018 | 36,478,157 | 2017 | 36,851,397 | 2016 | 37,410,265 | 2015 | 38,046,483 | 2014 | 38,943,700 | 2013 | 40,226,246 | 2012 | 41,711,160 | 2011 | 43,529,312 | 2010 | 46,680,736 | 2009 | 50,603,222 | 2008 | 53,880,789 | 2007 | 56,910,655 | 2006 | 59,327,586 | 2005 | 59,388,704 | 2004 | 57,729,800 | 2003 | 55,915,597 | 2002 | 54,325,901 | 2001 | 52,959,430 | 2000 | 51,700,945 | 1999 | 50,718,390 | 1998 | 49,794,142 | 1997 | 48,220,091 | 1996 | 46,771,049 | 1995 | 46,520,032 | 1994 | 47,415,417 | 1993 | 49,664,927 | 1992 | 52,737,297 | 1991 | 55,861,706 | 1990 | 59,078,156 | 1989 | 61,774,333 | 1988 | 63,416,217 | 1987 | 63,731,459 | 1986 | 63,137,304 | 1985 | 62,461,196 | 1984 | 61,718,142 | 1983 | 61,589,578 | 1982 | 61,480,850 | 1981 | 58,473,153 | 1980 | 53,072,274 | 1979 | 47,763,300 | 1978 | 42,620,046 | 1977 | 39,625,688 | 1976 | 40,409,350 | 1975 | 42,987,710 | 1974 | 45,529,453 | 1973 | 46,895,900 | 1972 | 46,783,050 | 1971 | 46,021,449 | 1970 | 44,748,154 | 1969 | 42,803,389 | 1968 | 40,506,759 | 1967 | 37,744,246 | 1966 | 34,921,387 | 1965 | 32,374,483 | 1964 | 30,161,309 | 1963 | 28,488,742 | 1962 | 27,108,038 | 1961 | 26,278,532 | 1960 | 25,973,923 |
|