Season 1 PBS , 2007 - 2008 Season 2 PBS , 2009 Season 3 PBS , 2009 Season 4 PBS , 2010 Season 5 PBS , 2011 Season 6 PBS , 2012 Season 7 PBS , 2013 Season 8 PBS , 2014 Season 9 PBS , 2015 Season 10 PBS , 2016 Season 11 PBS , 2017 Season 12 PBS , 2018 Season 13 PBS , 2019 Season 14 PBS , 2020 Season 15 Woodsmith Shop PBS , 2021 Season 16 PBS , 2022 Season 17 PBS , 2023 Season 18 PBS , 2024
, 2007 - 2008
