• united states (30)

california, new mexico, arizona, nevada, texas, virginia, illinois, maryland, washington, idaho, minnesota, north dakota, hawaii, georgia, massachusetts, new york, connecticut, new jersey, rhode island, ohio, oklahoma, missouri, indiana, pennsylvania, west virginia, florida, mississippi, louisiana, colorado, tennessee

• other (11)

japan, iceland, germany, romania, kyrgyzstan, mexico, kuwait, afghanistan, ireland, taiwan, australia