Year	Number
2004	1032200
2005	1157900
2006	1262500
2007	1227900
2008	1258500
2009	1398700
2010	1712400
2011	2040300
2012	2324200
2013	2571800
2014	2995900
2015	3567300
2016	4453500
2017	6561300
2018	8148200
2019	8733200
2020	10503800