Year	Number
1970	1030421
1971	570078
1972	655176
1973	787791
1974	1053550
1975	1053844
1976	1434981
1977	1690875
1978	1801908
1985	2017450
1998	2260240
2002	471227
2003	452342
2004	717568
2005	753523
2007	997258
2008	1129584
2009	1232675
2010	1323663
2011	1416520
2012	1496569
2013	874889
2014	898666
2015	893860
2016	978202
2017	956632