Rank	Countries/Territories	Count	Percent
1	United States	287	43.2%
2	China	184	27.7%
3	Germany	47	7.1%
4	Russia	24	3.6%
5	Korea, Republic of	17	2.6%
6	France	14	2.1%
7	Netherlands	10	1.5%
8	Iran, Islamic Republic of	9	1.4%
9	Czech Republic	7	1.1%
10	Japan	6	0.9%
11	Indonesia	5	0.8%
12	United Kingdom	5	0.8%
13	Poland	5	0.8%
14	Australia	5	0.8%
15	Hong Kong	5	0.8%
16	Canada	4	0.6%
17	India	3	0.5%
18	Norway	3	0.5%
19	Singapore	3	0.5%
20	South Africa	2	0.3%
21	Sweden	2	0.3%
22	Taiwan	2	0.3%
23	Ireland	2	0.3%
24	Luxembourg	2	0.3%
25	Egypt	2	0.3%
26	Finland	2	0.3%
27	Argentina	1	0.2%
28	Croatia	1	0.2%
29	Cyprus	1	0.2%
30	Malaysia	1	0.2%
31	Morocco	1	0.2%
32	Ukraine	1	0.2%
33	Portugal	1	0.2%
34	Spain	1	0.2%