Year	Number
2001	44459
2002	52785
2003	58603
2004	69752
2005	72022
2008	78655
2009	92023
2010	95782
2011	101210
2012	105442
2013	106525
2014	113512
2015	123292
2016	132524
2017	137532
2018	141712