Rank	Countries/Territories	Count	Percent
1	United States	144	30.5%
2	China	140	29.7%
3	Germany	36	7.6%
4	Romania	17	3.6%
5	Russia	13	2.8%
6	Netherlands	12	2.5%
7	Japan	12	2.5%
8	United Kingdom	10	2.1%
9	Korea, Republic of	9	1.9%
10	Singapore	7	1.5%
11	Taiwan	6	1.3%
12	Spain	5	1.1%
13	Australia	5	1.1%
14	Denmark	5	1.1%
15	Cyprus	4	0.8%
16	Hungary	4	0.8%
17	India	4	0.8%
18	Turkey	4	0.8%
19	Malaysia	3	0.6%
20	Hong Kong	3	0.6%
21	France	3	0.6%
22	Egypt	2	0.4%
23	Canada	2	0.4%
24	Iran, Islamic Republic of	2	0.4%
25	Lebanon	2	0.4%
26	Greece	2	0.4%
27	Mexico	2	0.4%
28	Saudi Arabia	2	0.4%
29	Serbia	2	0.4%
30	Venezuela, Bolivarian Republic of	2	0.4%
31	Viet Nam	2	0.4%
32	Poland	2	0.4%
33	South Africa	1	0.2%
34	Pakistan	1	0.2%
35	Indonesia	1	0.2%
36	Algeria	1	0.2%