Year	Number
1995	5472827.473432144
1996	6658283.950418267
1997	6957867.697041166
1998	7094926.300371391
1999	7950686.092627873
2000	8410825.329000114
2001	8822886.005410526
2002	9811415.870347627
2003	9707907.431544406
2004	11144721.844143836
2005	12956006.380525125
2006	14529500.405531382
2007	16999106.65490421
2008	18005255.38532787
2009	18594287.03186227
2010	20467099.629638974
2011	23220314.708381303
2012	26001684.94021313
2013	28995508.766287114
2014	31645081.800288152
2015	33502770.98510155
2016	32624657.6546745
2017	34557520.6921775
2018	38555567.9067446
2019	40176417.35906374