The economy is causing real hardship for New Jersey residents living in poverty.The Rev. Bruce Davidson with the Anti-Poverty Network of New Jersey said poverty rates are now higher than they’ve been in two decades. He says about 2 million poor and middle-income residents in the Garden State are struggling to get by.”More and more people are beginning to use things like their credit cards to buy groceries and basic necessities,” he said. “Unfortunately they’re not paying that off in 30 days. They’re amassing huge debt and they’re paying interest on this instead of trying to actually meet their expenses.”Davidson said donations during the holiday season help emergency food programs provide some assistance to those in need, but more has to be done to meet the year-round demand.