Year	Total
1985	11609000
1986	11903000
1987	11289000
1988	13923000
1989	13306000
1990	10100000
1991	10674000
1992	8675000
1993	9221000
1994	7915000
1995	6670000
1996	6605000
1997	7008000
1998	6894000
1999	7099000
2000	7094000
2001	6802000
2002	6636000
2003	7264000
2004	7458000
2005	5135000
2006	5136000
2007	4658000
2008	4559000
2009	4275000
2010	3622000
2011	3412000
2012	3034000
2013	2862000
2014	2697000
2015	2727900
2016	2755300