1980 216,673

1981 192,217

1982 163,834

1983 144,763

1984 157,414

1985 129,611

1986 127,978

1987 123,895

1988 124,664

1989 126,348

1990 92,288

1991 89,143

1992 98,336

1993 96,562

1994 97,317

1995 98,449

1996 100,485

1997 126,444

1998 135,295

1999 135,718

2000 141,295

2001 142,456

2002 148,339

2003 146,752

2004 160,348

2005 151,209

2006 161,907

2007 160,386

2008 139,977

2009 149,223

2010 173,583

2011 188,108

2012 185,614

2013 177,517