Rank	Countries/Territories	Count	Percent
1	United States	335	35.2%
2	China	274	28.8%
3	Germany	121	12.7%
4	Japan	42	4.4%
5	India	35	3.7%
6	France	30	3.2%
7	Canada	13	1.4%
8	Norway	13	1.4%
9	Netherlands	10	1.1%
10	United Kingdom	9	0.9%
11	Korea, Republic of	8	0.8%
12	Singapore	7	0.7%
13	Ireland	5	0.5%
14	Italy	4	0.4%
15	El Salvador	4	0.4%
16	Uganda	4	0.4%
17	Turkey	3	0.3%
18	Spain	3	0.3%
19	Brazil	3	0.3%
20	Cyprus	3	0.3%
21	Egypt	3	0.3%
22	Hong Kong	3	0.3%
23	Viet Nam	3	0.3%
24	Austria	2	0.2%
25	Mauritius	2	0.2%
26	Ukraine	2	0.2%
27	Tunisia	1	0.1%
28	Lithuania	1	0.1%
29	Kazakhstan	1	0.1%
30	Panama	1	0.1%
31	Portugal	1	0.1%
32	Qatar	1	0.1%
33	Romania	1	0.1%
34	Australia	1	0.1%
35	Chile	1	0.1%
36	Greece	1	0.1%
37	Iran, Islamic Republic of	1	0.1%