Rank	Countries/Territories	Count	Percent
1	United States	557	43.9%
2	China	407	32.1%
3	Germany	101	8%
4	France	39	3.1%
5	Belgium	17	1.3%
6	Canada	15	1.2%
7	South Africa	14	1.1%
8	Switzerland	14	1.1%
9	Singapore	13	1%
10	Netherlands	12	0.9%
11	United Kingdom	10	0.8%
12	Japan	10	0.8%
13	India	9	0.7%
14	Iran, Islamic Republic of	9	0.7%
15	Australia	8	0.6%
16	Cyprus	7	0.6%
17	Taiwan	6	0.5%
18	Korea, Republic of	3	0.2%
19	Latvia	2	0.2%
20	Mexico	2	0.2%
21	Ireland	2	0.2%
22	Hungary	2	0.2%
23	Ukraine	2	0.2%
24	Russia	2	0.2%
25	Qatar	1	0.1%
26	Romania	1	0.1%
27	Spain	1	0.1%
28	Argentina	1	0.1%
29	Italy	1	0.1%
30	Mongolia	1	0.1%