Year Number 2000 21625 2006 1820 2007 9654 2008 16113 2009 17415 2010 18486 2011 11206 2012 6343 2013 9792 2014 13732 2015 17735 2016 25875 2017 19404 2018 18923 2019 15439 2020 65028 2021 72465 2022 74558 2023 37888