Rank	Countries/Territories	Count	Percent
1	United States	274	29.6%
2	China	244	26.3%
3	Japan	211	22.8%
4	Germany	36	3.9%
5	France	27	2.9%
6	Singapore	25	2.7%
7	Korea, Republic of	18	1.9%
8	Australia	12	1.3%
9	Iran, Islamic Republic of	9	1%
10	Netherlands	9	1%
11	Canada	8	0.9%
12	Ukraine	7	0.8%
13	Turkey	5	0.5%
14	Hong Kong	5	0.5%
15	Israel	4	0.4%
16	Cyprus	4	0.4%
17	Poland	4	0.4%
18	Mongolia	3	0.3%
19	Palestine, State of	3	0.3%
20	Luxembourg	3	0.3%
21	Mexico	2	0.2%
22	Italy	2	0.2%
23	Taiwan	2	0.2%
24	Thailand	2	0.2%
25	United Kingdom	1	0.1%
26	Norway	1	0.1%
27	Pakistan	1	0.1%
28	Russia	1	0.1%
29	Spain	1	0.1%
30	Greece	1	0.1%
31	Albania	1	0.1%
32	Argentina	1	0.1%