2008 - William R Kohler
2009 - William R Kohler
2011 - William R Kohler
2012 - William R Kohler
2013 - William R Kohler
2014 - William R Kohler
2015 - William R Kohler
2016 - William R Kohler
2017 - William R Kohler
2018 - William R Kohler
2020 - William R Kohler
2021 - William R Kohler
2022 - William R Kohler
