Rank	Countries/Territories	Count	Percent
1	United States	277	33.9%
2	China	273	33.5%
3	Germany	75	9.2%
4	Japan	41	5%
5	France	22	2.7%
6	Iran, Islamic Republic of	15	1.8%
7	Sweden	13	1.6%
8	Korea, Republic of	12	1.5%
9	United Kingdom	10	1.2%
10	India	10	1.2%
11	Spain	8	1%
12	Hungary	6	0.7%
13	Cyprus	5	0.6%
14	Singapore	5	0.6%
15	Taiwan	4	0.5%
16	Netherlands	4	0.5%
17	Russia	4	0.5%
18	Canada	4	0.5%
19	Ireland	4	0.5%
20	Italy	4	0.5%
21	Hong Kong	3	0.4%
22	South Africa	3	0.4%
23	Malaysia	2	0.2%
24	Colombia	2	0.2%
25	Argentina	1	0.1%
26	Australia	1	0.1%
27	Egypt	1	0.1%
28	Ghana	1	0.1%
29	Indonesia	1	0.1%
30	Mexico	1	0.1%
31	Serbia	1	0.1%
32	Pakistan	1	0.1%
33	Poland	1	0.1%
34	Switzerland	1	0.1%