Rank	Countries/Territories	Count	Percent
1	United States	506	38.3%
2	China	305	23.1%
3	Germany	172	13%
4	United Kingdom	50	3.8%
5	Egypt	36	2.7%
6	France	32	2.4%
7	Netherlands	19	1.4%
8	Singapore	15	1.1%
9	Canada	15	1.1%
10	Ukraine	14	1.1%
11	Denmark	12	0.9%
12	Cyprus	11	0.8%
13	Korea, Republic of	10	0.8%
14	Australia	9	0.7%
15	Japan	9	0.7%
16	Nigeria	8	0.6%
17	Russia	7	0.5%
18	Switzerland	7	0.5%
19	Spain	7	0.5%
20	Iran, Islamic Republic of	7	0.5%
21	Greece	7	0.5%
22	India	7	0.5%
23	Hong Kong	6	0.5%
24	Ireland	6	0.5%
25	Brazil	6	0.5%
26	Taiwan	6	0.5%
27	New Zealand	5	0.4%
28	Norway	4	0.3%
29	Sweden	4	0.3%
30	South Africa	3	0.2%
31	Turkey	3	0.2%
32	Argentina	3	0.2%
33	Israel	3	0.2%
34	Viet Nam	2	0.2%
35	Indonesia	1	0.1%
36	Poland	1	0.1%
37	Portugal	1	0.1%
38	Mongolia	1	0.1%