Year	Total
1985	22660000
1986	23290000
1987	24060000
1988	24960000
1989	25400000
1990	25800000
1991	26600000
1992	25800000
1993	23000000
1994	20312000
1995	20633000
1996	22961000
1997	25779000
1998	25945000
1999	30131000
2000	35317000
2001	40091000
2002	47271000
2003	51448000
2004	59501000
2005	61493000
2006	65066000
2007	67181000
2008	70727000
2009	76495000
2010	79688000
2011	80064000
2012	79279000
2013	82308000
2014	81109000
2015	80174000
2016	79266000