| Year | Value | | 2022 | 10,652,180 | | 2021 | 10,675,063 | | 2020 | 10,670,575 | | 2019 | 10,644,508 | | 2018 | 10,587,048 | | 2017 | 10,491,552 | | 2016 | 10,400,073 | | 2015 | 10,326,290 | | 2014 | 10,270,725 | | 2013 | 10,247,855 | | 2012 | 10,239,429 | | 2011 | 10,221,150 | | 2010 | 10,225,515 | | 2009 | 10,283,968 | | 2008 | 10,363,765 | | 2007 | 10,450,972 | | 2006 | 10,536,042 | | 2005 | 10,589,952 | | 2004 | 10,585,771 | | 2003 | 10,527,929 | | 2002 | 10,434,550 | | 2001 | 10,323,533 | | 2000 | 10,207,523 | | 1999 | 10,079,368 | | 1998 | 9,949,376 | | 1997 | 9,824,340 | | 1996 | 9,695,997 | | 1995 | 9,563,461 | | 1994 | 9,431,416 | | 1993 | 9,291,037 | | 1992 | 9,143,080 | | 1991 | 8,996,032 | | 1990 | 8,835,427 | | 1989 | 8,656,131 | | 1988 | 8,464,240 | | 1987 | 8,259,610 | | 1986 | 8,039,961 | | 1985 | 7,811,254 | | 1984 | 7,574,868 | | 1983 | 7,327,979 | | 1982 | 7,072,142 | | 1981 | 6,809,100 | | 1980 | 6,540,811 | | 1979 | 6,273,454 | | 1978 | 6,010,112 | | 1977 | 5,748,191 | | 1976 | 5,488,480 | | 1975 | 5,234,111 | | 1974 | 5,000,462 | | 1973 | 4,807,016 | | 1972 | 4,660,920 | | 1971 | 4,568,155 | | 1970 | 4,521,599 | | 1969 | 4,496,768 | | 1968 | 4,478,748 | | 1967 | 4,468,898 | | 1966 | 4,460,572 | | 1965 | 4,450,244 | | 1964 | 4,432,050 | | 1963 | 4,401,202 | | 1962 | 4,363,922 | | 1961 | 4,316,908 | | 1960 | 4,258,497 |
|