Year | Value | 2022 | 14,458,176 | 2021 | 14,424,224 | 2020 | 14,277,190 | 2019 | 14,259,938 | 2018 | 14,324,635 | 2017 | 14,498,440 | 2016 | 14,823,641 | 2015 | 15,226,805 | 2014 | 15,581,132 | 2013 | 15,795,939 | 2012 | 15,903,168 | 2011 | 15,905,644 | 2010 | 15,773,730 | 2009 | 15,631,807 | 2008 | 15,481,104 | 2007 | 15,253,586 | 2006 | 14,995,008 | 2005 | 14,716,720 | 2004 | 14,440,200 | 2003 | 14,080,861 | 2002 | 13,614,881 | 2001 | 13,084,404 | 2000 | 12,221,913 | 1999 | 11,001,354 | 1998 | 9,825,337 | 1997 | 9,009,682 | 1996 | 8,769,098 | 1995 | 9,251,937 | 1994 | 10,295,116 | 1993 | 11,578,127 | 1992 | 12,771,332 | 1991 | 13,405,421 | 1990 | 13,450,373 | 1989 | 13,070,357 | 1988 | 12,375,953 | 1987 | 11,756,650 | 1986 | 11,394,506 | 1985 | 11,387,572 | 1984 | 11,750,351 | 1983 | 12,327,721 | 1982 | 12,793,570 | 1981 | 13,065,006 | 1980 | 13,142,473 | 1979 | 12,991,724 | 1978 | 12,686,712 | 1977 | 12,225,833 | 1976 | 11,599,483 | 1975 | 10,824,204 | 1974 | 10,035,515 | 1973 | 9,301,190 | 1972 | 8,548,275 | 1971 | 7,934,342 | 1970 | 7,707,406 | 1969 | 7,928,296 | 1968 | 8,339,757 | 1967 | 8,938,033 | 1966 | 9,623,045 | 1965 | 10,072,498 | 1964 | 10,132,888 | 1963 | 9,944,444 | 1962 | 9,686,878 | 1961 | 9,425,660 | 1960 | 9,141,808 |
|