Rank	Countries/Territories	Count	Percent
1	United States	135	33.9%
2	China	89	22.4%
3	Germany	34	8.5%
4	Japan	15	3.8%
5	Canada	15	3.8%
6	Denmark	14	3.5%
7	France	14	3.5%
8	Netherlands	12	3%
9	Switzerland	12	3%
10	Singapore	7	1.8%
11	India	7	1.8%
12	Saudi Arabia	6	1.5%
13	Thailand	4	1%
14	United Kingdom	4	1%
15	Iraq	4	1%
16	Ireland	3	0.8%
17	Korea, Republic of	3	0.8%
18	Australia	3	0.8%
19	Cyprus	2	0.5%
20	Iran, Islamic Republic of	2	0.5%
21	Mongolia	2	0.5%
22	Sweden	2	0.5%
23	Pakistan	2	0.5%
24	Russia	2	0.5%
25	Oman	1	0.3%
26	Taiwan	1	0.3%
27	Latvia	1	0.3%
28	Mexico	1	0.3%
29	Belgium	1	0.3%