Rank	Countries/Territories	Count	Percent
1	China	273	35.6%
2	United States	263	34.3%
3	Germany	49	6.4%
4	Czech Republic	40	5.2%
5	France	27	3.5%
6	Japan	20	2.6%
7	Netherlands	18	2.3%
8	Singapore	12	1.6%
9	Bulgaria	6	0.8%
10	Canada	6	0.8%
11		5	0.7%
12	Australia	5	0.7%
13	Ukraine	5	0.7%
14	United Kingdom	3	0.4%
15	South Africa	3	0.4%
16	Brazil	3	0.4%
17	Cyprus	3	0.4%
18	India	3	0.4%
19	Iran, Islamic Republic of	2	0.3%
20	Austria	2	0.3%
21	Bangladesh	2	0.3%
22	Argentina	2	0.3%
23	Mongolia	2	0.3%
24	Latvia	2	0.3%
25	Mauritius	2	0.3%
26	Switzerland	2	0.3%
27	Moldova, Republic of	1	0.1%
28	Portugal	1	0.1%
29	Qatar	1	0.1%
30	Romania	1	0.1%
31	Ireland	1	0.1%
32	Korea, Republic of	1	0.1%
33	Hong Kong	1	0.1%