Rank	Countries/Territories	Count	Percent
1	United States	340	41.2%
2	China	260	31.5%
3	Germany	91	11%
4	France	26	3.2%
5	Japan	16	1.9%
6	Switzerland	13	1.6%
7	Netherlands	10	1.2%
8	Singapore	9	1.1%
9	Cyprus	8	1%
10	Canada	6	0.7%
11	Bangladesh	5	0.6%
12	Argentina	5	0.6%
13	India	4	0.5%
14	Pakistan	4	0.5%
15	Ukraine	3	0.4%
16	Taiwan	3	0.4%
17	Australia	3	0.4%
18	Bahrain	2	0.2%
19	Hong Kong	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Italy	2	0.2%
22	Lithuania	2	0.2%
23	Malaysia	2	0.2%
24	Mongolia	2	0.2%
25	Norway	2	0.2%
26	Sweden	1	0.1%
27	Thailand	1	0.1%
28	Ireland	1	0.1%