Rank	Countries/Territories	Count	Percent
1	United States	535	49.1%
2	China	274	25.1%
3	Germany	106	9.7%
4	Japan	29	2.7%
5	Czech Republic	23	2.1%
6	India	22	2%
7	Ukraine	14	1.3%
8	Ireland	8	0.7%
9	Australia	7	0.6%
10	Cyprus	6	0.6%
11	France	6	0.6%
12	Hong Kong	6	0.6%
13	Canada	5	0.5%
14	Singapore	5	0.5%
15	Netherlands	4	0.4%
16	Italy	4	0.4%
17		4	0.4%
18	Argentina	3	0.3%
19	Belgium	3	0.3%
20	Malaysia	3	0.3%
21	Mexico	2	0.2%
22	Mongolia	2	0.2%
23	United Kingdom	2	0.2%
24	Russia	2	0.2%
25	Algeria	2	0.2%
26	Austria	2	0.2%
27	Egypt	2	0.2%
28	Hungary	2	0.2%
29	Greece	2	0.2%
30	Norway	1	0.1%
31	Spain	1	0.1%
32	Korea, Republic of	1	0.1%
33	Indonesia	1	0.1%
34	Iran, Islamic Republic of	1	0.1%