Rank	Countries/Territories	Count	Percent
1	United States	389	31.3%
2	China	358	28.8%
3	Germany	105	8.4%
4	Japan	74	5.9%
5	Iran, Islamic Republic of	44	3.5%
6	India	33	2.7%
7	France	30	2.4%
8	Singapore	21	1.7%
9	Indonesia	20	1.6%
10	United Kingdom	16	1.3%
11	Netherlands	15	1.2%
12	Serbia	13	1%
13	Turkey	13	1%
14	Ireland	10	0.8%
15	Australia	10	0.8%
16	Canada	9	0.7%
17	Korea, Republic of	9	0.7%
18	Romania	8	0.6%
19	Viet Nam	8	0.6%
20	Taiwan	7	0.6%
21	Bulgaria	4	0.3%
22	Italy	3	0.2%
23	Bangladesh	3	0.2%
24	Algeria	3	0.2%
25	Cyprus	3	0.2%
26	Jordan	3	0.2%
27	Libya	3	0.2%
28	Nigeria	3	0.2%
29	Luxembourg	2	0.2%
30	Mexico	2	0.2%
31	Russia	2	0.2%
32	Spain	2	0.2%
33	Sweden	2	0.2%
34	Hong Kong	2	0.2%
35	Hungary	2	0.2%
36	Thailand	2	0.2%
37	Venezuela, Bolivarian Republic of	2	0.2%
38	Ukraine	1	0.1%
39	Denmark	1	0.1%
40	Egypt	1	0.1%
41	Argentina	1	0.1%
42	Brazil	1	0.1%
43	Saudi Arabia	1	0.1%
44	Kazakhstan	1	0.1%
45	Norway	1	0.1%
46	Oman	1	0.1%