Rank	Countries/Territories	Count	Percent
1	United States	550	46.1%
2	China	298	25%
3	Germany	109	9.1%
4	Canada	27	2.3%
5	Korea, Republic of	16	1.3%
6	Netherlands	16	1.3%
7	India	15	1.3%
8	Switzerland	13	1.1%
9	Ukraine	13	1.1%
10	France	12	1%
11	Australia	10	0.8%
12	Cyprus	9	0.8%
13	Taiwan	8	0.7%
14	Spain	8	0.7%
15	Singapore	8	0.7%
16	Japan	7	0.6%
17	Iraq	7	0.6%
18	Iran, Islamic Republic of	6	0.5%
19	Austria	5	0.4%
20	Thailand	5	0.4%
21	Sweden	4	0.3%
22	Portugal	4	0.3%
23	Norway	4	0.3%
24	Brazil	4	0.3%
25	Egypt	4	0.3%
26	Argentina	3	0.3%
27	South Africa	3	0.3%
28	Russia	2	0.2%
29	Saudi Arabia	2	0.2%
30	Philippines	2	0.2%
31	Lithuania	2	0.2%
32	Malaysia	2	0.2%
33	Mexico	2	0.2%
34	Mongolia	2	0.2%
35	Myanmar	2	0.2%
36	Bosnia and Herzegovina	2	0.2%
37	Chile	2	0.2%
38	Ireland	2	0.2%
39	Italy	1	0.1%
40	Ecuador	1	0.1%
41	Bangladesh	1	0.1%
42	Latvia	1	0.1%