Rank	Countries/Territories	Count	Percent
1	United States	249	31.9%
2	China	174	22.3%
3	Germany	106	13.6%
4	Italy	32	4.1%
5	India	25	3.2%
6		23	2.9%
7	Korea, Republic of	14	1.8%
8	Netherlands	14	1.8%
9	Singapore	14	1.8%
10	Japan	13	1.7%
11	Canada	13	1.7%
12	Russia	9	1.2%
13	Taiwan	9	1.2%
14	Norway	8	1%
15	Australia	7	0.9%
16	Colombia	7	0.9%
17	Cyprus	7	0.9%
18	United Kingdom	7	0.9%
19	Hong Kong	6	0.8%
20	Malaysia	5	0.6%
21	Mongolia	4	0.5%
22	Portugal	4	0.5%
23	Brazil	4	0.5%
24	Iran, Islamic Republic of	3	0.4%
25	Denmark	3	0.4%
26	Turkey	3	0.4%
27	Viet Nam	3	0.4%
28	Saudi Arabia	2	0.3%
29	Poland	2	0.3%
30	Egypt	2	0.3%
31	Bangladesh	2	0.3%
32	Argentina	1	0.1%
33	France	1	0.1%
34	Ireland	1	0.1%
35	Indonesia	1	0.1%
36	Greece	1	0.1%
37	Spain	1	0.1%
38	Sweden	1	0.1%