Rank	Countries/Territories	Count	Percent
1	United States	179	33.8%
2	China	168	31.7%
3	Germany	33	6.2%
4	Japan	23	4.3%
5	Korea, Republic of	14	2.6%
6	Netherlands	12	2.3%
7	Hong Kong	10	1.9%
8	India	9	1.7%
9	Singapore	9	1.7%
10	Canada	6	1.1%
11	Iran, Islamic Republic of	6	1.1%
12	Australia	6	1.1%
13	Egypt	5	0.9%
14	United Kingdom	5	0.9%
15	Russia	4	0.8%
16	Taiwan	4	0.8%
17	Turkey	4	0.8%
18	Ireland	4	0.8%
19	Lithuania	3	0.6%
20	Cyprus	3	0.6%
21	Bulgaria	3	0.6%
22	Poland	3	0.6%
23	Philippines	2	0.4%
24	Ukraine	2	0.4%
25	Cabo Verde	2	0.4%
26	Brazil	2	0.4%
27	Denmark	2	0.4%
28	Italy	2	0.4%
29	Morocco	1	0.2%
30	Estonia	1	0.2%
31	France	1	0.2%
32	Cambodia	1	0.2%
33	Romania	1	0.2%