Rank	Countries/Territories	Count	Percent
1	United States	429	41.2%
2	China	329	31.6%
3	Germany	72	6.9%
4	Japan	44	4.2%
5	France	28	2.7%
6	Canada	24	2.3%
7	Netherlands	16	1.5%
8	Norway	14	1.3%
9	Hong Kong	8	0.8%
10	United Kingdom	8	0.8%
11	Korea, Republic of	7	0.7%
12	Brazil	6	0.6%
13	Singapore	6	0.6%
14	Russia	5	0.5%
15	India	5	0.5%
16	Belarus	4	0.4%
17	Egypt	4	0.4%
18	Australia	3	0.3%
19	Austria	3	0.3%
20	Iran, Islamic Republic of	3	0.3%
21	Ireland	3	0.3%
22	Italy	3	0.3%
23	Spain	3	0.3%
24	Ukraine	3	0.3%
25	Hungary	2	0.2%
26	Malaysia	2	0.2%
27	Mongolia	1	0.1%
28	Cyprus	1	0.1%
29	Switzerland	1	0.1%
30	Turkey	1	0.1%
31	South Africa	1	0.1%
32	United Arab Emirates	1	0.1%
33	Viet Nam	1	0.1%