PNC Bank economists Gush Faucher says the gain is partly due to an improving labor market with "more jobs and rising wages" as workers become scarce.

PNC银行经济学家格斯·福奇说，上涨的部分原因是劳动力市场不断改善，随着工人变得越来越稀缺，造成“就业越来越多，工资越来越高”。