Rank	Countries/Territories	Count	Percent
1	United States	429	39.3%
2	China	329	30.2%
3	Germany	83	7.6%
4	Iran, Islamic Republic of	23	2.1%
5	France	21	1.9%
6	United Kingdom	21	1.9%
7	Russia	19	1.7%
8	Slovakia	15	1.4%
9	Norway	13	1.2%
10	Japan	12	1.1%
11	India	11	1%
12	Netherlands	10	0.9%
13	Australia	8	0.7%
14	Belgium	8	0.7%
15	Canada	7	0.6%
16	Hong Kong	7	0.6%
17	Lithuania	7	0.6%
18	Cyprus	6	0.5%
19	Argentina	6	0.5%
20	Brazil	5	0.5%
21	Portugal	5	0.5%
22	Turkey	5	0.5%
23	Singapore	4	0.4%
24	Switzerland	4	0.4%
25	Indonesia	4	0.4%
26	Israel	4	0.4%
27	Italy	3	0.3%
28	Albania	3	0.3%
29	Korea, Republic of	3	0.3%
30	Mongolia	3	0.3%
31	Taiwan	2	0.2%
32	Spain	2	0.2%
33	Sweden	2	0.2%
34	Poland	2	0.2%
35	Czech Republic	2	0.2%
36	Ireland	1	0.1%
37	Pakistan	1	0.1%
38	Malawi	1	0.1%