137: United States - Maryland
43: United States - Virginia
15: United States - Pennsylvania
12: United States - Delaware
7: United States - District of Columbia
3: United States - Maryland
2: United States - Florida
2: United States - New York
2: United States - West Virginia
1: India - West Bengal
1: Italy - Sardegna
1: Chinese Taipei - Chiayi
1: United States - Georgia
1: United States - New Jersey
1: United States - Tennessee