Candy companies want to know: What will make Americans start chewing gum again? Last year, U.S. chewing gum sales rose less than 1% to 1.2 billion units, which was still 32% fewer than in 2018. Although sales in dollars are back to pre-pandemic levels, that’s mostly due to inflation; the average pack of gum cost $2.71 last year, $1.01 more …