Rank	Countries/Territories	Count	Percent
1	United States	402	31%
2	China	400	30.9%
3	Germany	165	12.7%
4	Japan	63	4.9%
5	United Kingdom	43	3.3%
6	India	37	2.9%
7	France	22	1.7%
8	Singapore	20	1.5%
9	Korea, Republic of	16	1.2%
10	Ireland	14	1.1%
11	Canada	10	0.8%
12	Netherlands	10	0.8%
13	Australia	9	0.7%
14	Norway	8	0.6%
15	Mexico	8	0.6%
16	Cyprus	7	0.5%
17	Taiwan	6	0.5%
18	Romania	6	0.5%
19	Argentina	5	0.4%
20	Indonesia	5	0.4%
21	Iran, Islamic Republic of	4	0.3%
22	Guatemala	4	0.3%
23	Russia	4	0.3%
24	Pakistan	3	0.2%
25	Turkey	3	0.2%
26	Colombia	3	0.2%
27	Belgium	2	0.2%
28	Greece	2	0.2%
29	Ukraine	2	0.2%
30	Switzerland	2	0.2%
31	Spain	2	0.2%
32	Malaysia	2	0.2%
33	Kenya	2	0.2%
34	Sweden	1	0.1%
35	Viet Nam	1	0.1%
36	Ghana	1	0.1%
37	Israel	1	0.1%