Year | Value | 2023 | 234,505 | 2022 | 234,133 | 2021 | 247,293 | 2020 | 248,175 | 2019 | 251,167 | 2018 | 255,468 | 2017 | 260,332 | 2016 | 267,066 | 2015 | 273,989 | 2014 | 279,857 | 2013 | 283,054 | 2012 | 280,316 | 2011 | 274,762 | 2010 | 271,621 | 2009 | 269,898 | 2008 | 270,180 | 2007 | 270,401 | 2006 | 267,197 | 2005 | 262,777 | 2004 | 258,959 | 2003 | 256,108 | 2002 | 257,408 | 2001 | 267,263 | 2000 | 277,280 | 1999 | 280,213 | 1998 | 280,992 | 1997 | 282,713 | 1996 | 284,708 | 1995 | 286,193 | 1994 | 288,138 | 1993 | 291,023 | 1992 | 294,684 | 1991 | 297,173 | 1990 | 299,524 | 1989 | 306,859 | 1988 | 313,983 | 1987 | 317,350 | 1986 | 320,820 | 1985 | 322,457 | 1984 | 318,259 | 1983 | 308,124 | 1982 | 295,946 | 1981 | 283,717 | 1980 | 272,687 | 1979 | 264,935 | 1978 | 262,065 | 1977 | 263,112 | 1976 | 266,599 | 1975 | 274,015 | 1974 | 284,937 |
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