Rank	Countries/Territories	Count	Percent
1	China	304	29.1%
2	United States	292	27.9%
3	Germany	157	15%
4	Japan	60	5.7%
5	United Kingdom	39	3.7%
6	India	33	3.2%
7	France	18	1.7%
8	Singapore	16	1.5%
9	Korea, Republic of	16	1.5%
10	Canada	10	1%
11	Ireland	9	0.9%
12	Norway	8	0.8%
13	Australia	7	0.7%
14	Cyprus	6	0.6%
15	Mexico	6	0.6%
16	Netherlands	6	0.6%
17	Romania	5	0.5%
18	Taiwan	5	0.5%
19	Argentina	5	0.5%
20	Indonesia	5	0.5%
21	Iran, Islamic Republic of	4	0.4%
22	Guatemala	4	0.4%
23	Colombia	3	0.3%
24	Turkey	3	0.3%
25	Russia	3	0.3%
26	Pakistan	3	0.3%
27	Malaysia	2	0.2%
28	Kenya	2	0.2%
29	Spain	2	0.2%
30	Ukraine	2	0.2%
31	Switzerland	2	0.2%
32	Belgium	2	0.2%
33	Greece	2	0.2%
34	Ghana	1	0.1%
35	Israel	1	0.1%
36	Sweden	1	0.1%
37	Viet Nam	1	0.1%