Rank	Countries/Territories	Count	Percent
1	United States	387	36.1%
2	China	356	33.2%
3	Germany	143	13.3%
4	Japan	28	2.6%
5	Russia	23	2.1%
6	Netherlands	16	1.5%
7	Norway	14	1.3%
8	Singapore	12	1.1%
9	United Kingdom	10	0.9%
10	Australia	10	0.9%
11	Canada	8	0.7%
12	France	8	0.7%
13	India	8	0.7%
14	Ireland	6	0.6%
15	Saudi Arabia	6	0.6%
16	Iraq	5	0.5%
17	Brazil	4	0.4%
18	Ukraine	4	0.4%
19	Switzerland	3	0.3%
20	Sri Lanka	2	0.2%
21	Nigeria	2	0.2%
22	Romania	2	0.2%
23	Cyprus	2	0.2%
24	Ethiopia	2	0.2%
25	Lithuania	2	0.2%
26	Malaysia	2	0.2%
27	Kuwait	1	0.1%
28	Indonesia	1	0.1%
29	Hungary	1	0.1%
30	Pakistan	1	0.1%
31	Philippines	1	0.1%
32	New Zealand	1	0.1%
33	Sweden	1	0.1%