Rank	Countries/Territories	Count	Percent
1	United States	422	44%
2	China	272	28.4%
3	Germany	113	11.8%
4	France	29	3%
5	India	15	1.6%
6	Japan	15	1.6%
7	Canada	12	1.3%
8	Singapore	10	1%
9	Austria	8	0.8%
10	Korea, Republic of	7	0.7%
11	Ireland	6	0.6%
12	Netherlands	5	0.5%
13	Zimbabwe	4	0.4%
14	Australia	4	0.4%
15	Cyprus	4	0.4%
16	United Kingdom	3	0.3%
17	Portugal	3	0.3%
18	Malaysia	3	0.3%
19	Ukraine	2	0.2%
20	New Zealand	2	0.2%
21	Luxembourg	2	0.2%
22	Indonesia	2	0.2%
23	Iran, Islamic Republic of	2	0.2%
24	Hong Kong	2	0.2%
25	Georgia	1	0.1%
26	Denmark	1	0.1%
27	Egypt	1	0.1%
28	Argentina	1	0.1%
29	Brazil	1	0.1%
30	Norway	1	0.1%
31	Sweden	1	0.1%
32	Taiwan	1	0.1%
33	Tanzania, United Republic of	1	0.1%
34	Turkey	1	0.1%
35	Russia	1	0.1%
36	Viet Nam	1	0.1%