Rank	Countries/Territories	Count	Percent
1	United States	423	42.6%
2	China	371	37.4%
3	Germany	75	7.6%
4	Singapore	20	2%
5	Canada	18	1.8%
6	Japan	16	1.6%
7	France	12	1.2%
8	Netherlands	12	1.2%
9	India	7	0.7%
10	Australia	4	0.4%
11	Mexico	4	0.4%
12	United Kingdom	4	0.4%
13	Russia	3	0.3%
14	Cyprus	3	0.3%
15	Czech Republic	2	0.2%
16	Iran, Islamic Republic of	2	0.2%
17	Korea, Republic of	2	0.2%
18	Malaysia	2	0.2%
19	Pakistan	2	0.2%
20	Sweden	2	0.2%
21	Switzerland	1	0.1%
22	Taiwan	1	0.1%
23	Ukraine	1	0.1%
24	Romania	1	0.1%
25	Mongolia	1	0.1%
26	Norway	1	0.1%
27	Italy	1	0.1%
28	Bangladesh	1	0.1%
29	Bulgaria	1	0.1%