Season 1 PBS , 2000 Season 2 PBS , 2001 Season 3 PBS , 2002 Season 4 PBS , 2003 Season 5 PBS , 2005 Season 6 PBS , 2006 Season 7 PBS , 2007 Season 8 PBS , 2008 Season 9 PBS , 2009 Season 10 PBS , 2010