Rank	Countries/Territories	Count	Percent
1	United States	496	38.5%
2	China	374	29%
3	Germany	135	10.5%
4	Singapore	43	3.3%
5	Canada	29	2.3%
6	France	27	2.1%
7	Poland	22	1.7%
8	India	20	1.6%
9	Japan	16	1.2%
10	Korea, Republic of	12	0.9%
11	Russia	12	0.9%
12	Switzerland	12	0.9%
13	Sweden	10	0.8%
14	Netherlands	10	0.8%
15	Australia	10	0.8%
16	Cyprus	10	0.8%
17	Lithuania	6	0.5%
18	United Kingdom	6	0.5%
19	Norway	5	0.4%
20	South Africa	5	0.4%
21	Taiwan	4	0.3%
22	Argentina	4	0.3%
23	Austria	3	0.2%
24	Spain	3	0.2%
25	Serbia	2	0.2%
26	Czech Republic	2	0.2%
27	Mexico	2	0.2%
28	Mongolia	2	0.2%
29	Iran, Islamic Republic of	1	0.1%
30	Ireland	1	0.1%
31	Hungary	1	0.1%
32	Denmark	1	0.1%
33	Romania	1	0.1%
34	Turkey	1	0.1%