Year	Number
1977	569914
1991	1085048
1992	1112079
1996	1109125
1997	1113848
1999	1119670
2000	1170440
2001	1085133
2002	1109856
2003	1265947
2009	1450923
2013	1084851
2014	938595
2015	818619
2016	461892