Year | Value | 2022 | 268,147 | 2021 | 250,574 | 2020 | 257,401 | 2019 | 267,045 | 2018 | 276,595 | 2017 | 285,491 | 2016 | 294,490 | 2015 | 301,533 | 2014 | 304,819 | 2013 | 305,646 | 2012 | 304,920 | 2011 | 309,821 | 2010 | 316,576 | 2009 | 318,632 | 2008 | 320,372 | 2007 | 324,061 | 2006 | 329,155 | 2005 | 334,652 | 2004 | 343,568 | 2003 | 357,302 | 2002 | 373,266 | 2001 | 389,131 | 2000 | 404,318 | 1999 | 416,991 | 1998 | 418,902 | 1997 | 410,653 | 1996 | 397,641 | 1995 | 380,466 | 1994 | 362,687 | 1993 | 353,465 | 1992 | 350,790 | 1991 | 345,528 | 1990 | 336,859 | 1989 | 329,662 | 1988 | 321,869 | 1987 | 311,741 | 1986 | 307,661 | 1985 | 311,095 | 1984 | 318,155 | 1983 | 327,762 | 1982 | 341,350 | 1981 | 360,678 | 1980 | 385,437 | 1979 | 414,035 | 1978 | 438,813 | 1977 | 451,869 | 1976 | 453,982 | 1975 | 448,174 | 1974 | 435,158 | 1973 | 421,751 | 1972 | 414,752 | 1971 | 405,403 | 1970 | 390,081 | 1969 | 379,999 | 1968 | 373,402 | 1967 | 367,181 | 1966 | 366,230 | 1965 | 369,248 | 1964 | 367,137 | 1963 | 361,601 | 1962 | 357,531 | 1961 | 353,738 | 1960 | 351,185 |
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