Excerpt: Annual health-insurance premiums for Colorado and Utah employers rose an estimated 13 percent in 2005 - a smaller jump than in 2004 when the average increase was 17.5 percent, according to a survey by Compdata Surveys. The increase is slightly higher than the national average of 12.4 percent, indicating the Colorado market is still playing catch-up after years of lower-than-average prices, Kansas City, Mo.-based Compdata said.