Year | Value | 2022 | 348,508 | 2021 | 344,351 | 2020 | 339,352 | 2019 | 335,528 | 2018 | 334,047 | 2017 | 330,807 | 2016 | 324,238 | 2015 | 320,064 | 2014 | 316,932 | 2013 | 310,520 | 2012 | 303,256 | 2011 | 297,055 | 2010 | 289,013 | 2009 | 282,711 | 2008 | 280,654 | 2007 | 281,380 | 2006 | 285,346 | 2005 | 290,391 | 2004 | 292,590 | 2003 | 293,133 | 2002 | 294,292 | 2001 | 293,409 | 2000 | 289,692 | 1999 | 285,906 | 1998 | 283,081 | 1997 | 279,174 | 1996 | 275,917 | 1995 | 274,072 | 1994 | 272,452 | 1993 | 270,547 | 1992 | 267,660 | 1991 | 262,752 | 1990 | 257,119 | 1989 | 249,813 | 1988 | 238,517 | 1987 | 228,527 | 1986 | 221,444 | 1985 | 215,232 | 1984 | 213,739 | 1983 | 218,258 | 1982 | 222,738 | 1981 | 225,200 | 1980 | 226,643 | 1979 | 225,074 | 1978 | 221,505 | 1977 | 218,035 | 1976 | 214,972 | 1975 | 205,381 | 1974 | 195,686 | 1973 | 193,797 | 1972 | 192,590 | 1971 | 189,639 | 1970 | 188,431 | 1969 | 184,962 | 1968 | 178,111 | 1967 | 172,801 | 1966 | 169,823 | 1965 | 163,205 | 1964 | 158,544 | 1963 | 159,658 | 1962 | 158,767 | 1961 | 155,759 | 1960 | 153,945 |
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