Rank	Countries/Territories	Count	Percent
1	United States	260	32.2%
2	China	259	32.1%
3	Germany	67	8.3%
4	Japan	32	4%
5	Italy	24	3%
6	Netherlands	20	2.5%
7	Australia	19	2.4%
8	Iran, Islamic Republic of	13	1.6%
9	Russia	10	1.2%
10	Singapore	10	1.2%
11	Canada	9	1.1%
12	Cyprus	8	1%
13	Taiwan	8	1%
14	France	7	0.9%
15	India	7	0.9%
16	Hong Kong	5	0.6%
17	Brazil	5	0.6%
18	Switzerland	5	0.6%
19	United Kingdom	5	0.6%
20	Pakistan	5	0.6%
21	Ireland	4	0.5%
22	Cuba	3	0.4%
23	Nigeria	3	0.4%
24	Mexico	3	0.4%
25	Korea, Republic of	2	0.2%
26	Spain	2	0.2%
27	Sweden	2	0.2%
28	Egypt	2	0.2%
29	Viet Nam	2	0.2%
30	Argentina	1	0.1%
31	Belgium	1	0.1%
32	South Africa	1	0.1%
33	Ukraine	1	0.1%
34	Moldova, Republic of	1	0.1%
35	Norway	1	0.1%
36	Poland	1	0.1%