Year Number 2009 93300.0030517578 2010 117199.996948242 2011 136100.006103516 2012 146800.00305175802 2013 157600.006103516 2014 180600.006103516 2015 189800.00305175802 2016 177000 2017 229000 2018 264000 2019 311000 2020 75000