Rank	Countries/Territories	Count	Percent
1	United States	422	38.8%
2	China	398	36.6%
3	Germany	106	9.7%
4	Singapore	21	1.9%
5	Japan	15	1.4%
6	Norway	14	1.3%
7	France	14	1.3%
8	Netherlands	12	1.1%
9	India	11	1%
10	United Kingdom	10	0.9%
11	Korea, Republic of	8	0.7%
12	Romania	5	0.5%
13	Viet Nam	4	0.4%
14	Slovakia	4	0.4%
15	Ireland	4	0.4%
16	Cyprus	4	0.4%
17	Canada	4	0.4%
18	Hong Kong	3	0.3%
19	Ukraine	3	0.3%
20	Switzerland	3	0.3%
21	Taiwan	2	0.2%
22	Pakistan	2	0.2%
23	Spain	2	0.2%
24	Sweden	2	0.2%
25	Iran, Islamic Republic of	2	0.2%
26	Bulgaria	2	0.2%
27	Denmark	2	0.2%
28	Egypt	2	0.2%
29	Argentina	1	0.1%
30	Australia	1	0.1%
31	Austria	1	0.1%
32	Indonesia	1	0.1%
33	Georgia	1	0.1%
34	Mongolia	1	0.1%
35	Nigeria	1	0.1%