Complex sentence: Since the 1881 once census on local industries there have been large changes in occupation of the residents of Thurlaston, agriculture is no longer the primary industry, with just 18 residents out of the 430 who are aged 16-74 and in work.
Split into simpler sentences: Since the 1881 census on local industries there have been large changes in occupation of residents. Agriculture is no longer the primary industry, with just 18 residents out of the 430 who are aged 16-74 and in work.