In North America, at least 22 different states^[13] as well as portions of Canada are known to have been affected by Colony Collapse Disorder. The disorder has been identified in a geographically diverse group of states including Georgia, Oklahoma, Pennsylvania,^[14] Wisconsin and California.^[14] In some states the loss of honey bee colonies is estimated as high as 75 percent of the population. The phenomenon is particularly important for crops such as the almond growing in California, where honey bees are the predominant pollinator and the crop value in 2006 was $US 1.5 billion. In 2000, the total U.S. crop value that was wholly dependent on the honey bee pollination was estimated to exceed $US 15 billion.^[15]