Table: best southwest
[['city', '1970', '1980', '1990', '2000', '2010 est'], ['cedar hill', '2610', '6849', '19988', '32093', '46300'], ['desoto', '6617', '15538', '30544', '37646', '49600'], ['duncanville', '14105', '27781', '35008', '36081', '39250'], ['lancaster', '10522', '14807', '22117', '25894', '36600'], ['total', '33854', '64975', '107657', '131714', '171750']]
Statement: in 1970 Duncanville had the highest number compared to all other area
Statement: in 2000 , Desoto surpassed Duncanville in regard to the highest number
Statement: in 1970 Cedar Hill had the lowest number , but in 2010 it had the second highest
Statement: the Total in 1970 is smaller than a single place 's number in 2010
Statement: from 1970 to 2010 , Cedar Hill increased by around a factor of 20 time , whereas Lancaster only increased by around 3.6 time