Rank	Countries/Territories	Count	Percent
1	United States	579	38.1%
2	China	361	23.7%
3	Germany	231	15.2%
4	Czech Republic	76	5%
5	India	38	2.5%
6	Australia	37	2.4%
7	Norway	26	1.7%
8	United Kingdom	24	1.6%
9	Hong Kong	19	1.2%
10	Singapore	17	1.1%
11	Netherlands	17	1.1%
12	Ireland	13	0.9%
13	France	13	0.9%
14	Korea, Republic of	11	0.7%
15	Canada	9	0.6%
16	Cyprus	7	0.5%
17	Switzerland	6	0.4%
18	Turkey	6	0.4%
19	Spain	5	0.3%
20	Sweden	5	0.3%
21	Japan	4	0.3%
22	Taiwan	3	0.2%
23	Iran, Islamic Republic of	3	0.2%
24	Latvia	2	0.1%
25	Algeria	2	0.1%
26	Romania	2	0.1%
27	Portugal	1	0.1%
28	Argentina	1	0.1%
29	Belgium	1	0.1%
30	Mexico	1	0.1%
31	Mongolia	1	0.1%