Year % 2012 14.3731796444657 2013 10.6057193507607 2014 10.4781361324885 2015 7.71220540333397 2016 4.29691693462225 2017 3.68327094992369 2018 3.58311151186513 2019 3.21976085312087 2020 3.65355130263791 2021 3.49666295766886