| Year | Value | | 2022 | 3,729,656 | | 2021 | 3,708,968 | | 2020 | 3,731,605 | | 2019 | 3,764,240 | | 2018 | 3,799,810 | | 2017 | 3,891,478 | | 2016 | 4,039,754 | | 2015 | 4,220,772 | | 2014 | 4,504,283 | | 2013 | 4,868,945 | | 2012 | 5,186,113 | | 2011 | 5,272,649 | | 2010 | 5,099,147 | | 2009 | 4,825,648 | | 2008 | 4,552,009 | | 2007 | 4,316,586 | | 2006 | 4,271,916 | | 2005 | 4,398,271 | | 2004 | 4,415,920 | | 2003 | 4,295,081 | | 2002 | 4,162,812 | | 2001 | 4,049,180 | | 2000 | 3,972,388 | | 1999 | 3,969,605 | | 1998 | 3,998,986 | | 1997 | 3,993,360 | | 1996 | 3,948,052 | | 1995 | 3,879,405 | | 1994 | 3,810,275 | | 1993 | 3,742,458 | | 1992 | 3,667,491 | | 1991 | 3,594,462 | | 1990 | 3,527,328 | | 1989 | 3,455,501 | | 1988 | 3,369,114 | | 1987 | 3,274,811 | | 1986 | 3,163,492 | | 1985 | 3,055,174 | | 1984 | 2,939,637 | | 1983 | 2,806,898 | | 1982 | 2,688,305 | | 1981 | 2,596,862 | | 1980 | 2,510,434 | | 1979 | 2,452,341 | | 1978 | 2,433,486 | | 1977 | 2,414,607 | | 1976 | 2,384,967 | | 1975 | 2,342,017 | | 1974 | 2,290,777 | | 1973 | 2,235,238 | | 1972 | 2,169,965 | | 1971 | 2,082,381 | | 1970 | 1,972,226 | | 1969 | 1,888,365 | | 1968 | 1,812,253 | | 1967 | 1,757,886 | | 1966 | 1,730,043 | | 1965 | 1,717,710 | | 1964 | 1,691,652 | | 1963 | 1,654,282 | | 1962 | 1,604,659 | | 1961 | 1,547,899 | | 1960 | 1,495,653 |
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