Rank	Countries/Territories	Count	Percent
1	United States	576	42.4%
2	China	447	32.9%
3	Germany	144	10.6%
4	France	33	2.4%
5	Canada	20	1.5%
6	Netherlands	19	1.4%
7	Japan	18	1.3%
8	Singapore	13	1%
9	Romania	12	0.9%
10	Switzerland	12	0.9%
11	United Kingdom	9	0.7%
12	Taiwan	6	0.4%
13	Hong Kong	6	0.4%
14	Cyprus	5	0.4%
15	Ukraine	5	0.4%
16	India	4	0.3%
17	Italy	3	0.2%
18	Australia	3	0.2%
19	Belgium	2	0.1%
20	Argentina	2	0.1%
21	Hungary	2	0.1%
22	Indonesia	2	0.1%
23	Iran, Islamic Republic of	2	0.1%
24	Ireland	2	0.1%
25	Mexico	2	0.1%
26	Moldova, Republic of	1	0.1%
27	Mongolia	1	0.1%
28	Philippines	1	0.1%
29	Poland	1	0.1%
30	Russia	1	0.1%
31	Spain	1	0.1%
32	Turkey	1	0.1%
33	Korea, Republic of	1	0.1%