Rank	Countries/Territories	Count	Percent
1	United States	163	31.2%
2	China	103	19.7%
3	Germany	73	14%
4	Brazil	40	7.6%
5	Russia	16	3.1%
6	Serbia	16	3.1%
7	Singapore	14	2.7%
8	Japan	12	2.3%
9	Korea, Republic of	8	1.5%
10	India	8	1.5%
11	France	6	1.1%
12	Taiwan	6	1.1%
13	Netherlands	6	1.1%
14	United Kingdom	6	1.1%
15	Portugal	5	1%
16	Viet Nam	4	0.8%
17	Hong Kong	3	0.6%
18	Australia	3	0.6%
19	Bangladesh	3	0.6%
20	Iran, Islamic Republic of	3	0.6%
21	Ireland	2	0.4%
22	Canada	2	0.4%
23	Romania	2	0.4%
24	Oman	2	0.4%
25	Pakistan	2	0.4%
26	Thailand	2	0.4%
27	Venezuela, Bolivarian Republic of	2	0.4%
28	Sweden	2	0.4%
29	Switzerland	2	0.4%
30	Peru	1	0.2%
31	New Zealand	1	0.2%
32	Argentina	1	0.2%
33	Denmark	1	0.2%
34	Israel	1	0.2%
35	Lebanon	1	0.2%
36	Malaysia	1	0.2%