Year	Total
1985	38134000
1986	40066000
1987	41630000
1988	43424000
1989	41446000
1990	38719000
1991	37797000
1992	38076000
1993	34577000
1994	33824000
1995	27316000
1996	24397000
1997	20945000
1998	20624000
1999	19096000
2000	17839000
2001	22300000
2002	22593000
2003	24945000
2004	26591000
2005	26885000
2006	28337000
2007	31139000
2008	33788000
2009	30937000
2010	33384000
2011	36340000
2012	36472000
2013	36256000
2014	40974000
2015	35794000
2016	35611000