Rank	Countries/Territories	Count	Percent
1	United States	557	44.7%
2	China	384	30.8%
3	Germany	102	8.2%
4	Japan	48	3.9%
5	France	35	2.8%
6	Sweden	18	1.4%
7	Ukraine	15	1.2%
8	Singapore	13	1%
9	Netherlands	13	1%
10	Cyprus	10	0.8%
11	India	7	0.6%
12	Canada	6	0.5%
13	Argentina	6	0.5%
14	Australia	4	0.3%
15	Ecuador	4	0.3%
16	Bangladesh	3	0.2%
17	Iran, Islamic Republic of	3	0.2%
18	Portugal	3	0.2%
19	Romania	2	0.2%
20	United Kingdom	2	0.2%
21	Switzerland	2	0.2%
22	Lithuania	2	0.2%
23	Norway	2	0.2%
24	Korea, Republic of	1	0.1%
25	Georgia	1	0.1%
26	Finland	1	0.1%
27	Russia	1	0.1%
28	South Africa	1	0.1%