Rank	Countries/Territories	Count	Percent
1	United States	371	36.8%
2	China	327	32.4%
3	Germany	85	8.4%
4	Japan	25	2.5%
5	Taiwan	22	2.2%
6	Singapore	19	1.9%
7	Canada	16	1.6%
8	Norway	15	1.5%
9	Ukraine	15	1.5%
10	Sweden	14	1.4%
11	Switzerland	12	1.2%
12	France	12	1.2%
13	Korea, Republic of	11	1.1%
14	Iran, Islamic Republic of	7	0.7%
15	Ireland	7	0.7%
16	United Kingdom	7	0.7%
17	Indonesia	5	0.5%
18	Cyprus	5	0.5%
19	Belarus	5	0.5%
20	Hong Kong	4	0.4%
21	Netherlands	4	0.4%
22	India	3	0.3%
23	Mongolia	3	0.3%
24	Australia	3	0.3%
25	Austria	2	0.2%
26	Argentina	2	0.2%
27	Malaysia	2	0.2%
28	Italy	2	0.2%
29	Philippines	2	0.2%
30	Romania	2	0.2%