1980 109,853

1981 113,847

1982 114,718

1983 113,663

1984 113,591

1985 109,591

1986 113,472

1987 110,372

1988 106,677

1989 114,894

1990 103,483

1991 75,838

1992 71,065

1993 78,269

1994 87,374

1995 95,030

1996 102,803

1997 91,563

1998 104,090

1999 113,180

2000 123,090

2001 132,463

2002 138,395

2003 147,257

2004 156,562

2005 166,721

2006 177,130

2007 189,258

2008 205,460

2009 214,450

2010 224,167

2011 231,609

2012 236,510

2013 239,948