Rank	Countries/Territories	Count	Percent
1	United States	413	37%
2	China	329	29.5%
3	Germany	80	7.2%
4	India	29	2.6%
5	United Kingdom	29	2.6%
6	Japan	27	2.4%
7	France	22	2%
8	Portugal	20	1.8%
9	Netherlands	18	1.6%
10	Singapore	15	1.3%
11	Taiwan	14	1.3%
12	Russia	11	1%
13	Zambia	11	1%
14	Ireland	9	0.8%
15	Canada	9	0.8%
16	Hong Kong	6	0.5%
17	Italy	6	0.5%
18	Korea, Republic of	6	0.5%
19	Denmark	5	0.4%
20	Australia	4	0.4%
21	Bangladesh	4	0.4%
22	Cyprus	4	0.4%
23	Saudi Arabia	4	0.4%
24	South Africa	3	0.3%
25	Egypt	3	0.3%
26	Iran, Islamic Republic of	3	0.3%
27	Nepal	3	0.3%
28	Romania	2	0.2%
29	Nigeria	2	0.2%
30	Norway	2	0.2%
31	Mauritius	2	0.2%
32	Indonesia	2	0.2%
33	Belgium	2	0.2%
34	Brazil	2	0.2%
35	Georgia	2	0.2%
36	Poland	2	0.2%
37	Switzerland	2	0.2%
38	Syrian Arab Republic	2	0.2%
39	Spain	1	0.1%
40	Greece	1	0.1%
41	Estonia	1	0.1%
42	Ethiopia	1	0.1%
43	Mexico	1	0.1%
44	Malaysia	1	0.1%
45	Pakistan	1	0.1%