Rank	Countries/Territories	Count	Percent
1	United States	195	35.2%
2	China	177	31.9%
3	Germany	51	9.2%
4	Japan	25	4.5%
5	Netherlands	15	2.7%
6	United Kingdom	13	2.3%
7	Taiwan	11	2%
8	France	7	1.3%
9	Romania	6	1.1%
10	Cyprus	6	1.1%
11	Bulgaria	4	0.7%
12	Canada	4	0.7%
13	Nigeria	3	0.5%
14	Pakistan	3	0.5%
15	Singapore	3	0.5%
16	Sweden	3	0.5%
17	Russia	2	0.4%
18	Ukraine	2	0.4%
19	Portugal	2	0.4%
20	Korea, Republic of	2	0.4%
21	Mexico	2	0.4%
22	Iceland	2	0.4%
23	Iran, Islamic Republic of	2	0.4%
24	Chile	2	0.4%
25	Algeria	2	0.4%
26	Argentina	2	0.4%
27	Australia	2	0.4%
28	Bangladesh	2	0.4%
29	Brazil	2	0.4%
30	Spain	1	0.2%
31	Turkey	1	0.2%