Rank	Countries/Territories	Count	Percent
1	United States	322	37.5%
2	China	244	28.4%
3	Germany	73	8.5%
4	Switzerland	61	7.1%
5	France	24	2.8%
6	India	16	1.9%
7	Japan	14	1.6%
8	Canada	14	1.6%
9	Korea, Republic of	12	1.4%
10	Hong Kong	7	0.8%
11	Australia	7	0.8%
12	Argentina	6	0.7%
13	Cyprus	6	0.7%
14	United Kingdom	6	0.7%
15	Thailand	5	0.6%
16	Brazil	5	0.6%
17	Taiwan	4	0.5%
18	Iran, Islamic Republic of	4	0.5%
19	Singapore	4	0.5%
20	Ireland	3	0.3%
21	Malaysia	3	0.3%
22	Netherlands	2	0.2%
23	Norway	2	0.2%
24	Indonesia	2	0.2%
25	Uganda	2	0.2%
26	Ukraine	2	0.2%
27	Russia	2	0.2%
28	Italy	1	0.1%
29	Spain	1	0.1%
30	Hungary	1	0.1%
31	Peru	1	0.1%
32	Romania	1	0.1%
33	Georgia	1	0.1%