Rank	Countries/Territories	Count	Percent
1	United States	312	40.1%
2	China	244	31.3%
3	Germany	77	9.9%
4	Japan	30	3.9%
5	Korea, Republic of	20	2.6%
6	France	15	1.9%
7	Singapore	11	1.4%
8	Cyprus	10	1.3%
9	Ireland	8	1%
10	Switzerland	8	1%
11	Netherlands	7	0.9%
12	Sweden	4	0.5%
13	India	4	0.5%
14	Turkey	3	0.4%
15	Ukraine	2	0.3%
16	Taiwan	2	0.3%
17	Russia	2	0.3%
18	Italy	2	0.3%
19	Egypt	2	0.3%
20	Hong Kong	2	0.3%
21	Argentina	2	0.3%
22	Australia	2	0.3%
23	Belgium	2	0.3%
24	Canada	1	0.1%
25	Iran, Islamic Republic of	1	0.1%
26	Lithuania	1	0.1%
27	Mongolia	1	0.1%
28	New Zealand	1	0.1%
29	Philippines	1	0.1%
30	Thailand	1	0.1%
31	United Kingdom	1	0.1%