1980 69,149

1981 69,395

1982 70,345

1983 69,000

1984 67,684

1985 67,993

1986 70,222

1987 71,758

1988 73,567

1989 74,392

1990 75,008

1991 73,736

1992 70,885

1993 68,950

1994 68,957

1995 70,274

1996 71,452

1997 70,024

1998 70,870

1999 70,953

2000 69,742

2001 70,784

2002 69,230

2003 69,542

2004 70,532

2005 72,402

2006 74,413

2007 78,172

2008 75,790

2009 75,685

2010 80,504

2011 84,406

2012 85,689

2013 87,235