[['rank', 'year', 'ascent time', 'speed', 'rider'], ['1', '2000', '41:55', '18.32 km / h', 'roberto heras ( esp )'], ['2', '2013', '43:07', '17.81 km / h', 'chris horner ( usa )'], ['3', '2008', '43:12', '17.78 km / h', 'alberto contador ( esp )'], ['4', '2000', '43:24', '17.70 km / h', 'pavel tonkov ( rus )'], ['5', '2000', '43:24', '17.70 km / h', 'roberto laiseka ( esp )'], ['6', '2013', '43:35', '17.62 km / h', 'alejandro valverde ( esp )'], ['7', '2013', '43:35', '17.62 km / h', 'vincenzo nibali ( ita )'], ['8', '2008', '43:54', '17.49 km / h', 'alejandro valverde ( esp )'], ['9', '2002', '43:55', '17.49 km / h', 'roberto heras ( esp )'], ['10', '2011', '43:57', '17.47 km / h', 'juan jose cobo ( esp )'], ['11', '2008', '44:10', '17.39 km / h', 'joaquim rodriguez ( esp )'], ['12', '2000', '44:13', '17.37 km / h', 'raimondas rumå¡as ( lit )'], ['13', '2008', '44:17', '17.34 km / h', 'levi leipheimer ( usa )']]
none of the top 13 time came from before 2000
none of the top 13 time came from before [ENT]