Rank	Countries/Territories	Count	Percent
1	United States	229	33%
2	China	164	23.6%
3	Germany	63	9.1%
4	France	31	4.5%
5	Japan	31	4.5%
6	Canada	27	3.9%
7	Australia	26	3.7%
8	Ireland	19	2.7%
9	Switzerland	15	2.2%
10	Singapore	10	1.4%
11	Netherlands	10	1.4%
12	Italy	7	1%
13	Korea, Republic of	6	0.9%
14	Viet Nam	6	0.9%
15	Thailand	6	0.9%
16	Greece	5	0.7%
17	Hong Kong	4	0.6%
18	Bulgaria	4	0.6%
19	Taiwan	4	0.6%
20	Turkey	2	0.3%
21	Ukraine	2	0.3%
22	United Kingdom	2	0.3%
23	Spain	2	0.3%
24	Sweden	2	0.3%
25	Egypt	2	0.3%
26	Cyprus	2	0.3%
27	Iran, Islamic Republic of	2	0.3%
28	Mongolia	2	0.3%
29	India	1	0.1%
30	Czech Republic	1	0.1%
31	Colombia	1	0.1%
32	Lebanon	1	0.1%
33	Pakistan	1	0.1%
34	Palestine, State of	1	0.1%
35	Poland	1	0.1%
36	Portugal	1	0.1%
37	Russia	1	0.1%