Complex sentence: Beretta's sales steadily declined every year of production as the market turned away from two-door models, and in 1996, Chevrolet ended production of both the Beretta and Corsica after 10 model years.
Split into simpler sentences: Beretta's sales steadily declined every year of production as the market turned away from two-door models. In 1996, Chevrolet ended production of both the Beretta and Corsica after 10 model years.