Rank	Countries/Territories	Count	Percent
1	China	388	31.9%
2	United States	344	28.2%
3	Japan	145	11.9%
4	Germany	98	8%
5	Russia	69	5.7%
6	Canada	29	2.4%
7	Korea, Republic of	26	2.1%
8	Singapore	17	1.4%
9	France	11	0.9%
10	India	11	0.9%
11	Bulgaria	11	0.9%
12	Netherlands	7	0.6%
13	Iran, Islamic Republic of	6	0.5%
14	Australia	5	0.4%
15	Cyprus	5	0.4%
16	Uzbekistan	5	0.4%
17	Egypt	3	0.2%
18	Finland	3	0.2%
19	Indonesia	3	0.2%
20	Hong Kong	3	0.2%
21	Mexico	3	0.2%
22	Mongolia	3	0.2%
23	Turkey	3	0.2%
24	United Kingdom	3	0.2%
25	Taiwan	2	0.2%
26	Ukraine	2	0.2%
27	Ireland	2	0.2%
28	Costa Rica	2	0.2%
29	Bangladesh	2	0.2%
30	Argentina	1	0.1%
31	Sweden	1	0.1%
32	Switzerland	1	0.1%
33	Malaysia	1	0.1%
34	Norway	1	0.1%
35	Pakistan	1	0.1%
36	Romania	1	0.1%