Complex sentence: The population was 6,994 at the 2000 census, at the 2010 census the population was 6,827 and a census estimate from 2012 showed 7,072.
Split into simpler sentences: The population was 6,994 at the 2000 census, and 6,827 at the 2010 census. A census estimate from 2012 showed 7,072.