Rank	Countries/Territories	Count	Percent
1	United States	97	28%
2	China	73	21.1%
3	Russia	22	6.4%
4	India	16	4.6%
5	United Kingdom	14	4%
6	Germany	12	3.5%
7	Italy	11	3.2%
8	Netherlands	10	2.9%
9	Singapore	10	2.9%
10	Japan	8	2.3%
11	Australia	7	2%
12	Canada	6	1.7%
13	Taiwan	6	1.7%
14	Ireland	4	1.2%
15	Korea, Republic of	3	0.9%
16	Lithuania	3	0.9%
17	Thailand	3	0.9%
18	Spain	3	0.9%
19	Philippines	3	0.9%
20	Viet Nam	3	0.9%
21	Zimbabwe	2	0.6%
22	Syrian Arab Republic	2	0.6%
23	Ukraine	2	0.6%
24	Hong Kong	2	0.6%
25	Puerto Rico	2	0.6%
26	Montenegro	2	0.6%
27	Saudi Arabia	2	0.6%
28	Bangladesh	2	0.6%
29	Belgium	2	0.6%
30	Albania	1	0.3%
31	Greece	1	0.3%
32	France	1	0.3%
33	Luxembourg	1	0.3%
34	Malaysia	1	0.3%
35	Mongolia	1	0.3%
36	Israel	1	0.3%
37	Indonesia	1	0.3%
38	South Africa	1	0.3%
39	Switzerland	1	0.3%
40	Turkey	1	0.3%
41	Nepal	1	0.3%
42	Kenya	1	0.3%
43	Portugal	1	0.3%