Season 1 History , 2012 Watch now Season 2 History , 2013 Watch now Season 3 History , 2014 Watch now Season 4 History , 2015 Watch now Season 5 History , 2016 Watch now Season 6 History , 2016 - 2017 Watch now Season 7 History , 2017 Watch now Season 8 History , 2018 - 2019 Watch now Season 9 History , 2020 Watch now Season 10 History , 2021 Watch now