Rank	Countries/Territories	Count	Percent
1	United States	581	49.4%
2	China	265	22.5%
3	Germany	88	7.5%
4	Korea, Republic of	44	3.7%
5	United Kingdom	29	2.5%
6	Netherlands	18	1.5%
7	India	17	1.4%
8	Australia	16	1.4%
9	France	15	1.3%
10	Iran, Islamic Republic of	13	1.1%
11	Canada	11	0.9%
12	Singapore	10	0.9%
13	Spain	10	0.9%
14	Hong Kong	9	0.8%
15	Japan	7	0.6%
16	Austria	6	0.5%
17	Cyprus	4	0.3%
18	Ireland	4	0.3%
19	Taiwan	4	0.3%
20	Russia	4	0.3%
21	Norway	3	0.3%
22	Turkey	3	0.3%
23	Latvia	3	0.3%
24	Romania	2	0.2%
25	Mexico	2	0.2%
26	Mongolia	2	0.2%
27	Slovenia	2	0.2%
28	Saudi Arabia	1	0.1%
29	Lithuania	1	0.1%
30	Italy	1	0.1%
31	Greece	1	0.1%