8: United States - New Mexico

7: United States - South Dakota

7: United States - Utah

5: United States - Wyoming

4: United States - Kansas

4: United States - Ohio

3: United States - Arkansas

3: United States - Tennessee

2: Japan - Hyogo

2: United States - Georgia

2: United States - Hawaii

2: United States - Illinois

2: United States - Michigan

2: United States - Minnesota

2: United States - Missouri

2: United States - Nebraska

2: United States - New Jersey

2: United States - South Carolina

1: China - Guangdong

1: Germany - Hamburg

1: Mexico - Baja California Sur

1: Peru - Lima

1: United States - Connecticut

1: United States - Idaho

1: United States - Nevada

1: United States - New York

1: United States - Oklahoma

1: United States - Oregon

1: United States - Pennsylvania

1: United States - Virginia

1: United States - West Virginia

1: United States - Wisconsin