Year	Number
1971	2008608
1972	2029913
1973	2089281
1978	2223498
1994	1254935
1997	1266725
1999	1428107
2000	1218103
2001	1067124
2002	927592
2003	767947
2004	579293
2005	636785
2006	815532
2007	280054
2009	189378
2010	103493
2011	488303
2012	332520
2014	360955
2016	154511