Year | Value | 2022 | 41,747,897 | 2021 | 41,619,874 | 2020 | 41,509,052 | 2019 | 41,350,692 | 2018 | 41,401,386 | 2017 | 41,550,076 | 2016 | 41,879,583 | 2015 | 42,271,112 | 2014 | 42,513,673 | 2013 | 42,611,292 | 2012 | 42,643,521 | 2011 | 42,438,603 | 2010 | 42,256,325 | 2009 | 42,271,550 | 2008 | 42,360,902 | 2007 | 42,328,564 | 2006 | 42,362,800 | 2005 | 42,377,607 | 2004 | 42,132,200 | 2003 | 41,750,568 | 2002 | 41,373,383 | 2001 | 40,974,920 | 2000 | 40,543,554 | 1999 | 40,079,683 | 1998 | 39,540,069 | 1997 | 38,985,254 | 1996 | 38,602,031 | 1995 | 38,138,778 | 1994 | 37,573,901 | 1993 | 37,308,111 | 1992 | 37,254,723 | 1991 | 36,745,323 | 1990 | 35,549,872 | 1989 | 34,286,641 | 1988 | 33,031,766 | 1987 | 31,627,278 | 1986 | 30,428,919 | 1985 | 30,030,203 | 1984 | 29,929,018 | 1983 | 29,565,324 | 1982 | 29,198,626 | 1981 | 28,947,300 | 1980 | 28,678,058 | 1979 | 28,376,980 | 1978 | 28,098,360 | 1977 | 27,892,045 | 1976 | 27,722,123 | 1975 | 27,619,757 | 1974 | 27,665,829 | 1973 | 27,725,381 | 1972 | 27,729,203 | 1971 | 27,769,332 | 1970 | 27,754,550 | 1969 | 27,668,367 | 1968 | 27,730,011 | 1967 | 27,841,664 | 1966 | 27,696,085 | 1965 | 27,553,640 | 1964 | 27,194,866 | 1963 | 26,047,633 | 1962 | 24,556,776 | 1961 | 23,323,438 | 1960 | 22,315,746 |
|