Rank	Countries/Territories	Count	Percent
1	United States	952	35.4%
2	China	532	19.8%
3	Germany	135	5%
4	United Kingdom	125	4.6%
5	India	123	4.6%
6	Zambia	70	2.6%
7	Netherlands	57	2.1%
8	Singapore	55	2%
9	Canada	53	2%
10	Australia	44	1.6%
11	Indonesia	35	1.3%
12	France	33	1.2%
13	Malaysia	31	1.2%
14	Saudi Arabia	29	1.1%
15	Ireland	29	1.1%
16	Russia	28	1%
17	Japan	22	0.8%
18	Iran, Islamic Republic of	21	0.8%
19	South Africa	20	0.7%
20	Ghana	19	0.7%
21	Taiwan	17	0.6%
22	Pakistan	14	0.5%
23	Hong Kong	14	0.5%
24	Egypt	13	0.5%
25	Belgium	13	0.5%
26	Mexico	12	0.4%
27	Turkey	11	0.4%
28	Slovakia	11	0.4%
29	Switzerland	11	0.4%
30	Philippines	10	0.4%
31	Italy	9	0.3%
32	Cyprus	9	0.3%
33	Kenya	9	0.3%
34	Ukraine	9	0.3%
35	Viet Nam	8	0.3%
36	Korea, Republic of	8	0.3%
37	Thailand	8	0.3%
38	Botswana	6	0.2%
39	Israel	5	0.2%
40	Uganda	5	0.2%
41	Poland	5	0.2%
42	Rwanda	5	0.2%
43	New Zealand	4	0.1%
44	Argentina	4	0.1%
45	Brazil	3	0.1%
46	Bulgaria	3	0.1%
47	Iraq	3	0.1%
48	Nigeria	3	0.1%
49	Mauritius	3	0.1%
50	Tanzania, United Republic of	3	0.1%
51	Sweden	3	0.1%
52	Qatar	2	0.1%
53	Jordan	2	0.1%
54	Oman	2	0.1%
55	Peru	2	0.1%
56	Greece	2	0.1%
57	Guatemala	2	0.1%
58	Iceland	2	0.1%
59	Lebanon	2	0.1%
60	Lithuania	2	0.1%
61	Macao	2	0.1%
62	Albania	2	0.1%
63	Finland	2	0.1%
64	United Arab Emirates	2	0.1%
65	Czech Republic	1	0%
66	Ecuador	1	0%
67	Colombia	1	0%
68	Azerbaijan	1	0%
69	Bangladesh	1	0%
70	Palestine, State of	1	0%
71	Norway	1	0%
72	Malta	1	0%
73	Mongolia	1	0%
74	Nepal	1	0%
75	Spain	1	0%
76	Sri Lanka	1	0%
77	Togo	1	0%