| Year | Value | | 2022 | 8,889,134 | | 2021 | 8,817,967 | | 2020 | 8,649,904 | | 2019 | 8,171,594 | | 2018 | 7,848,388 | | 2017 | 7,677,258 | | 2016 | 7,424,089 | | 2015 | 7,140,032 | | 2014 | 6,944,999 | | 2013 | 6,715,988 | | 2012 | 6,430,329 | | 2011 | 6,029,870 | | 2010 | 5,737,754 | | 2009 | 5,591,835 | | 2008 | 5,378,099 | | 2007 | 5,141,680 | | 2006 | 5,034,620 | | 2005 | 4,932,860 | | 2004 | 4,768,876 | | 2003 | 4,692,946 | | 2002 | 4,681,115 | | 2001 | 4,669,598 | | 2000 | 4,727,958 | | 1999 | 4,913,577 | | 1998 | 5,030,861 | | 1997 | 5,064,618 | | 1996 | 5,073,215 | | 1995 | 4,943,120 | | 1994 | 4,691,045 | | 1993 | 4,568,993 | | 1992 | 4,540,124 | | 1991 | 4,432,648 | | 1990 | 4,420,045 | | 1989 | 4,507,699 | | 1988 | 4,428,019 | | 1987 | 4,263,855 | | 1986 | 4,210,393 | | 1985 | 4,128,646 | | 1984 | 3,996,005 | | 1983 | 3,921,992 | | 1982 | 3,928,449 | | 1981 | 3,929,721 | | 1980 | 3,925,982 | | 1979 | 3,912,604 | | 1978 | 3,871,580 | | 1977 | 3,812,075 | | 1976 | 3,701,847 | | 1975 | 3,589,612 | | 1974 | 3,493,686 | | 1973 | 3,366,018 | | 1972 | 3,267,185 | | 1971 | 3,202,330 | | 1970 | 3,112,145 | | 1969 | 3,045,454 | | 1968 | 3,058,404 | | 1967 | 3,050,474 | | 1966 | 3,011,068 | | 1965 | 3,017,042 | | 1964 | 3,024,239 | | 1963 | 2,982,959 | | 1962 | 2,918,741 | | 1961 | 2,891,410 | | 1960 | 2,870,722 |
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