Last week’s economic news included readings on construction spending and public and private-sector job growth. Weekly readings on mortgage rates and first-time jobless claims were also released. Construction Spending Dips in December Overall spending on public and private-sector construction spending dropped by  -0.20 percent in December to an annual rate of $1.33 trillion. Analysts expected spending to increase by 0.10 percent based on November’s revised reading of 0.70 percent growth in construction spending. Spending on residential construction rose 1.04 percent in December, which is good news for housing shortages in many areas of the U.S. Lower mortgage and interest rates…