Rank	Countries/Territories	Count	Percent
1	United States	322	37.9%
2	China	254	29.9%
3	Germany	120	14.1%
4	Japan	26	3.1%
5	Switzerland	13	1.5%
6	Australia	12	1.4%
7	Singapore	11	1.3%
8	Netherlands	10	1.2%
9	India	10	1.2%
10	Ireland	5	0.6%
11	Italy	5	0.6%
12	Spain	5	0.6%
13	France	5	0.6%
14	United Kingdom	5	0.6%
15	Taiwan	4	0.5%
16	Thailand	4	0.5%
17	Korea, Republic of	4	0.5%
18	Canada	3	0.4%
19		3	0.4%
20	Cyprus	3	0.4%
21	Romania	3	0.4%
22	Russia	3	0.4%
23	Malaysia	3	0.4%
24	Mexico	3	0.4%
25	New Zealand	2	0.2%
26	Colombia	2	0.2%
27	Argentina	2	0.2%
28	Brazil	2	0.2%
29	Egypt	2	0.2%
30	Lebanon	2	0.2%
31	Ecuador	1	0.1%