As many residents worry about the price of gas, groceries, housing and other necessities, Connecticut insurers are proposing double-digit rate increases for state-regulated health plans next year. Carriers are seeking a 16.2% average rate increase for individual policies and 17.8% for small group plans. The policies cover about 220,000 people — 157,000 with individual plan coverage and 63,000 with small group plans. Here’s what to know about the proposed rate hikes.