The document discusses 10 office markets with the highest annual rent gains in the United States. It provides details on average rental prices per square foot and vacancy rates for each market. The markets mentioned are Oakland, Dallas-Fort Worth, Nashville, Austin, Detroit, San Jose, Cambridge, Fort Lauderdale, Oakland suburbs, and Salt Lake City. Average rents in these markets ranged from $20.38 per square foot in Detroit to $65.26 in Cambridge. Many of the markets saw increasing rental prices and decreasing vacancy rates from the previous year.