Year | Value | 2022 | 11,507,176 | 2021 | 11,943,177 | 2020 | 12,134,720 | 2019 | 12,428,877 | 2018 | 12,754,097 | 2017 | 13,144,184 | 2016 | 13,606,028 | 2015 | 14,119,731 | 2014 | 14,673,683 | 2013 | 15,247,483 | 2012 | 15,803,114 | 2011 | 16,255,125 | 2010 | 16,507,771 | 2009 | 16,595,953 | 2008 | 16,609,685 | 2007 | 16,482,729 | 2006 | 16,234,523 | 2005 | 15,987,605 | 2004 | 15,747,933 | 2003 | 15,440,183 | 2002 | 15,141,716 | 2001 | 14,940,766 | 2000 | 14,782,769 | 1999 | 14,637,596 | 1998 | 14,517,360 | 1997 | 14,400,650 | 1996 | 14,247,728 | 1995 | 14,029,127 | 1994 | 13,793,963 | 1993 | 13,611,092 | 1992 | 13,448,763 | 1991 | 13,308,215 | 1990 | 13,292,334 | 1989 | 13,423,407 | 1988 | 13,637,943 | 1987 | 13,914,109 | 1986 | 14,258,353 | 1985 | 14,581,665 | 1984 | 14,810,525 | 1983 | 14,893,617 | 1982 | 14,869,167 | 1981 | 14,749,243 | 1980 | 14,564,682 | 1979 | 14,398,359 | 1978 | 14,225,677 | 1977 | 13,961,004 | 1976 | 13,655,652 | 1975 | 13,364,573 | 1974 | 13,099,808 | 1973 | 12,761,639 | 1972 | 12,362,463 | 1971 | 11,928,719 | 1970 | 11,125,385 | 1969 | 9,956,965 | 1968 | 8,839,627 | 1967 | 8,065,103 | 1966 | 7,859,915 | 1965 | 8,351,668 | 1964 | 9,368,656 | 1963 | 10,669,602 | 1962 | 11,886,759 | 1961 | 12,538,686 | 1960 | 12,593,938 |
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