Rank	Countries/Territories	Count	Percent
1	United States	180	33.5%
2	China	97	18.1%
3	Germany	69	12.8%
4	Canada	29	5.4%
5	Netherlands	22	4.1%
6	Ireland	19	3.5%
7	Korea, Republic of	18	3.4%
8	Australia	12	2.2%
9	India	10	1.9%
10	Russia	10	1.9%
11	France	9	1.7%
12	Pakistan	8	1.5%
13	Turkey	7	1.3%
14	Japan	6	1.1%
15	Egypt	4	0.7%
16	United Kingdom	4	0.7%
17	Iran, Islamic Republic of	3	0.6%
18	Romania	3	0.6%
19	Cyprus	3	0.6%
20	Hong Kong	3	0.6%
21	Kenya	2	0.4%
22	Indonesia	2	0.4%
23	Estonia	2	0.4%
24	Austria	2	0.4%
25	South Africa	2	0.4%
26	Switzerland	2	0.4%
27	Taiwan	2	0.4%
28	Sweden	1	0.2%
29	Singapore	1	0.2%
30	Lao People's Democratic Republic	1	0.2%
31	Nepal	1	0.2%
32	Bulgaria	1	0.2%
33	Armenia	1	0.2%
34	Georgia	1	0.2%