Year	Number
1995	5604094.7188857235
1996	6361336.482163989
1997	6655188.861296466
1998	6706266.206167133
1999	7482302.791969987
2000	7836650.595171423
2001	8489704.810691392
2002	9597982.873258244
2003	9756308.311291765
2004	11371716.187264519
2005	12787723.658761807
2006	14207513.3171143
2007	17963991.86871939
2008	18545304.583253097
2009	19842113.52158224
2010	21206463.382482946
2011	20093300.350530863
2012	21339533.62321998
2013	20780542.206699457
2014	21408619.230154652
2015	24064888.690397307
2016	24362726.94113351