Rank	Countries/Territories	Count	Percent
1	United States	287	44.2%
2	China	196	30.2%
3	Germany	37	5.7%
4	Japan	18	2.8%
5	India	13	2%
6	Singapore	13	2%
7	Ireland	11	1.7%
8	Canada	9	1.4%
9	Netherlands	8	1.2%
10	Taiwan	7	1.1%
11	Korea, Republic of	7	1.1%
12	Russia	6	0.9%
13	Australia	5	0.8%
14	Cyprus	4	0.6%
15	Peru	4	0.6%
16	Sri Lanka	3	0.5%
17	France	2	0.3%
18	Belgium	2	0.3%
19	Brazil	2	0.3%
20	Indonesia	2	0.3%
21	Iran, Islamic Republic of	2	0.3%
22	Hungary	1	0.2%
23	Lithuania	1	0.2%
24	Italy	1	0.2%
25	Argentina	1	0.2%
26	Egypt	1	0.2%
27	Colombia	1	0.2%
28	Norway	1	0.2%
29	Sweden	1	0.2%
30	Switzerland	1	0.2%
31	Spain	1	0.2%
32	United Kingdom	1	0.2%
33	Viet Nam	1	0.2%