Calendar year U.S. Canada 2007 17,808[46] 7,503[46] 2008 75,053 13,163 2009 77,222 11,056 2010 99,515 13,199 2011 124,543[47] 14,191 2012 142,349[47] 14,329 2013 162,751[48] 16,878 2014 199,199[49] 28,827 2015 287,190[49] 35,841 2016 329,904[5] 40,055[50] 2017 403,465[51] 43,418[52] 2018 412,110[53] 41,167[54] 2019 350,447[55] 37,530[56] 2020 227,935[57] 25,998[58]