Year | Value | 2022 | 419,670 | 2021 | 420,893 | 2020 | 417,983 | 2019 | 410,354 | 2018 | 399,058 | 2017 | 388,728 | 2016 | 375,399 | 2015 | 357,077 | 2014 | 341,298 | 2013 | 330,704 | 2012 | 327,152 | 2011 | 337,056 | 2010 | 356,747 | 2009 | 380,802 | 2008 | 411,258 | 2007 | 446,002 | 2006 | 478,493 | 2005 | 505,463 | 2004 | 525,583 | 2003 | 537,140 | 2002 | 542,388 | 2001 | 547,040 | 2000 | 554,980 | 1999 | 565,206 | 1998 | 572,618 | 1997 | 571,546 | 1996 | 559,396 | 1995 | 536,984 | 1994 | 507,240 | 1993 | 473,415 | 1992 | 439,666 | 1991 | 410,583 | 1990 | 388,766 | 1989 | 374,723 | 1988 | 367,175 | 1987 | 364,063 | 1986 | 363,164 | 1985 | 362,536 | 1984 | 360,881 | 1983 | 357,918 | 1982 | 353,661 | 1981 | 348,226 | 1980 | 342,247 | 1979 | 336,323 | 1978 | 330,991 | 1977 | 326,572 | 1976 | 322,825 | 1975 | 319,207 | 1974 | 315,521 | 1973 | 311,968 | 1972 | 308,649 | 1971 | 305,362 | 1970 | 300,963 | 1969 | 295,082 | 1968 | 288,165 | 1967 | 280,580 | 1966 | 273,399 | 1965 | 267,213 | 1964 | 261,826 | 1963 | 257,206 | 1962 | 253,242 | 1961 | 249,198 | 1960 | 244,632 |
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