Year	Number
2004-01-01	198.7874
2005-01-01	213.3027
2006-01-01	232.2700
2007-01-01	246.8667
2008-01-01	253.2142
2009-01-01	266.9454
2010-01-01	266.9195
2011-01-01	281.9508
2012-01-01	304.7462
2013-01-01	310.5515
2014-01-01	339.0816
2015-01-01	362.9386
2016-01-01	367.0493