Year | Value | 2022 | 302,660 | 2021 | 300,757 | 2020 | 300,535 | 2019 | 299,860 | 2018 | 298,626 | 2017 | 297,242 | 2016 | 295,328 | 2015 | 293,253 | 2014 | 292,917 | 2013 | 298,504 | 2012 | 311,145 | 2011 | 327,063 | 2010 | 343,707 | 2009 | 359,020 | 2008 | 369,767 | 2007 | 374,701 | 2006 | 375,238 | 2005 | 373,295 | 2004 | 369,576 | 2003 | 363,147 | 2002 | 353,942 | 2001 | 343,370 | 2000 | 332,428 | 1999 | 323,711 | 1998 | 317,945 | 1997 | 311,482 | 1996 | 300,483 | 1995 | 282,471 | 1994 | 257,821 | 1993 | 231,597 | 1992 | 212,448 | 1991 | 207,920 | 1990 | 219,689 | 1989 | 242,377 | 1988 | 270,484 | 1987 | 297,627 | 1986 | 315,583 | 1985 | 322,883 | 1984 | 321,205 | 1983 | 314,409 | 1982 | 307,697 | 1981 | 304,872 | 1980 | 307,958 | 1979 | 316,680 | 1978 | 325,671 | 1977 | 329,019 | 1976 | 324,181 | 1975 | 311,231 | 1974 | 292,258 | 1973 | 270,125 | 1972 | 247,195 | 1971 | 224,848 | 1970 | 203,651 | 1969 | 183,465 | 1968 | 164,206 | 1967 | 147,076 | 1966 | 133,768 | 1965 | 125,478 | 1964 | 122,644 | 1963 | 125,075 | 1962 | 131,428 | 1961 | 139,465 | 1960 | 147,638 |
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