Year	Number
2007-01-01	294.004779104565
2008-01-01	309.535835483072
2009-01-01	460.954701010935
2010-01-01	468.978539879216
2011-01-01	500.604885226992
2012-01-01	639.218811440535
2013-01-01	645.333226513873
2014-01-01	647.924214881397
2015-01-01	661.890438185467