Rank	Countries/Territories	Count	Percent
1	United States	256	31.8%
2	China	239	29.7%
3	Germany	109	13.5%
4	Singapore	24	3%
5	Canada	21	2.6%
6	Japan	19	2.4%
7	Netherlands	16	2%
8	United Kingdom	13	1.6%
9	Korea, Republic of	12	1.5%
10	Hong Kong	9	1.1%
11	Poland	9	1.1%
12	France	9	1.1%
13	Iran, Islamic Republic of	8	1%
14	Russia	7	0.9%
15	Brazil	6	0.7%
16	Cyprus	5	0.6%
17	India	5	0.6%
18	Australia	4	0.5%
19	Turkey	4	0.5%
20	Taiwan	3	0.4%
21	Spain	3	0.4%
22	Portugal	2	0.2%
23	Norway	2	0.2%
24	Thailand	2	0.2%
25	Ukraine	2	0.2%
26	Ireland	2	0.2%
27	Italy	2	0.2%
28	Malaysia	2	0.2%
29	Mexico	2	0.2%
30	Mongolia	2	0.2%
31	Bosnia and Herzegovina	1	0.1%
32	Argentina	1	0.1%
33	Ethiopia	1	0.1%
34	Chile	1	0.1%
35	Viet Nam	1	0.1%
36	Switzerland	1	0.1%