| Year | Value | | 2022 | 6,664,449 | | 2021 | 6,834,326 | | 2020 | 6,899,126 | | 2019 | 6,945,235 | | 2018 | 6,982,604 | | 2017 | 7,020,858 | | 2016 | 7,058,322 | | 2015 | 7,095,383 | | 2014 | 7,130,576 | | 2013 | 7,164,132 | | 2012 | 7,199,077 | | 2011 | 7,234,099 | | 2010 | 7,291,436 | | 2009 | 7,320,807 | | 2008 | 7,350,222 | | 2007 | 7,381,579 | | 2006 | 7,411,569 | | 2005 | 7,440,769 | | 2004 | 7,463,157 | | 2003 | 7,480,591 | | 2002 | 7,496,522 | | 2001 | 7,503,433 | | 2000 | 7,516,346 | | 1999 | 7,540,401 | | 1998 | 7,567,745 | | 1997 | 7,596,501 | | 1996 | 7,617,794 | | 1995 | 7,625,357 | | 1994 | 7,734,639 | | 1993 | 7,699,307 | | 1992 | 7,646,424 | | 1991 | 7,595,636 | | 1990 | 7,586,000 | | 1989 | 7,581,000 | | 1988 | 7,572,000 | | 1987 | 7,558,000 | | 1986 | 7,536,000 | | 1985 | 7,504,000 | | 1984 | 7,489,000 | | 1983 | 7,468,000 | | 1982 | 7,440,000 | | 1981 | 7,405,000 | | 1980 | 7,362,000 | | 1979 | 7,332,000 | | 1978 | 7,297,000 | | 1977 | 7,258,000 | | 1976 | 7,214,000 | | 1975 | 7,163,000 | | 1974 | 7,128,000 | | 1973 | 7,091,000 | | 1972 | 7,053,000 | | 1971 | 7,013,000 | | 1970 | 6,972,000 | | 1969 | 6,945,000 | | 1968 | 6,915,000 | | 1967 | 6,880,000 | | 1966 | 6,841,000 | | 1965 | 6,794,000 | | 1964 | 6,765,000 | | 1963 | 6,732,000 | | 1962 | 6,696,000 | | 1961 | 6,655,000 | | 1960 | 6,608,000 |
|