Rank	Countries/Territories	Count	Percent
1	United States	358	31.7%
2	China	315	27.9%
3	Germany	150	13.3%
4	India	47	4.2%
5	Canada	34	3%
6	Korea, Republic of	30	2.7%
7	Japan	29	2.6%
8	Israel	14	1.2%
9	Australia	13	1.2%
10	Russia	10	0.9%
11	Norway	8	0.7%
12	Moldova, Republic of	8	0.7%
13	Ireland	7	0.6%
14	Senegal	7	0.6%
15	Afghanistan	7	0.6%
16	Egypt	7	0.6%
17	France	6	0.5%
18	Netherlands	6	0.5%
19	Singapore	6	0.5%
20	Taiwan	6	0.5%
21	Slovakia	4	0.4%
22	Spain	4	0.4%
23	Peru	4	0.4%
24	Italy	4	0.4%
25	Hong Kong	3	0.3%
26	Argentina	3	0.3%
27	Brazil	3	0.3%
28	Sweden	3	0.3%
29	Thailand	3	0.3%
30	Ukraine	3	0.3%
31	United Kingdom	2	0.2%
32	Viet Nam	2	0.2%
33	Chile	2	0.2%
34	Denmark	2	0.2%
35	Indonesia	2	0.2%
36	Iraq	2	0.2%
37	Mongolia	2	0.2%
38	Malaysia	2	0.2%
39	Romania	2	0.2%
40	Pakistan	2	0.2%
41	Serbia	1	0.1%
42	Saudi Arabia	1	0.1%
43	Mexico	1	0.1%
44	Georgia	1	0.1%
45	Greece	1	0.1%
46	Czech Republic	1	0.1%
47	Turkey	1	0.1%