Rank	Countries/Territories	Count	Percent
1	United States	429	31.7%
2	China	391	28.9%
3	Germany	123	9.1%
4	Canada	39	2.9%
5	Japan	34	2.5%
6	Russia	33	2.4%
7	Hong Kong	31	2.3%
8	Togo	24	1.8%
9	France	20	1.5%
10	Netherlands	19	1.4%
11	Singapore	18	1.3%
12	Egypt	18	1.3%
13	Korea, Republic of	16	1.2%
14	United Kingdom	16	1.2%
15	India	14	1%
16	Belgium	14	1%
17	Pakistan	11	0.8%
18	Spain	11	0.8%
19	Australia	10	0.7%
20	Chile	9	0.7%
21	Viet Nam	8	0.6%
22	Lithuania	7	0.5%
23	Saudi Arabia	6	0.4%
24	Brazil	6	0.4%
25	Taiwan	6	0.4%
26	Ireland	5	0.4%
27	Philippines	5	0.4%
28	Mongolia	4	0.3%
29	Argentina	4	0.3%
30	Cyprus	4	0.3%
31	Romania	3	0.2%
32	Switzerland	3	0.2%
33	Portugal	2	0.1%
34	Norway	2	0.1%
35	Malaysia	1	0.1%
36	Turkey	1	0.1%
37	Ukraine	1	0.1%
38	Denmark	1	0.1%
39	Italy	1	0.1%
40	Iran, Islamic Republic of	1	0.1%
41	Ghana	1	0.1%
42	Greece	1	0.1%