By Richard Horgan Los Angeles (Knewz) — According to Zillow’s latest monthly “Real Estate Market Report,” there are five major metropolitan areas in the United States where new homeowners are paying 50 percent or more on their mortgage than a year ago. Topping the list is Austin, Texas, where the current average monthly mortgage payment is $2,299. That is a 63.2 percent increase compared to the same time last year. The other places where plus-50 increases have registered are all along the southern portion of the U.S.: Raleigh (54.3 percent increase), Tampa (52.3 percent), Las Vegas (51.5 perce…