International Monetary Fund downgrades world growth to 3.5%
Monthly gain supports view of a strong U.S. economy
Lack of inflationary pressure means Federal Reserve can be patient with rate hikes
Job growth offers reassurance about U.S. economy
In December, businesses add 271K jobs
Updated forecast projects two hikes in 2019, down from three
Core retail sales exceed expectations in November
Flat headline reading reflects oil-price plunge
Consumers boosted their spending at the fastest pace in seven months
Home sales, durable goods orders down