Rank	Countries/Territories	Count	Percent
1	United States	249	40.8%
2	China	152	24.9%
3	Germany	113	18.5%
4	France	31	5.1%
5	Switzerland	11	1.8%
6	United Kingdom	7	1.1%
7	Cyprus	5	0.8%
8	Australia	5	0.8%
9	Korea, Republic of	5	0.8%
10	Netherlands	5	0.8%
11	Singapore	5	0.8%
12	South Africa	3	0.5%
13	Canada	3	0.5%
14	Ecuador	2	0.3%
15	Philippines	2	0.3%
16	Malawi	2	0.3%
17	Malaysia	2	0.3%
18	Iran, Islamic Republic of	2	0.3%
19	Thailand	2	0.3%
20	Japan	1	0.2%
21	Sweden	1	0.2%
22	Indonesia	1	0.2%
23	Chile	1	0.2%
24	Bulgaria	1	0.2%