Rank	Countries/Territories	Count	Percent
1	United States	554	34.4%
2	China	506	31.4%
3	Germany	169	10.5%
4	Singapore	93	5.8%
5	Netherlands	56	3.5%
6	France	32	2%
7	United Kingdom	30	1.9%
8	Japan	27	1.7%
9	Russia	15	0.9%
10	Bulgaria	13	0.8%
11	Korea, Republic of	10	0.6%
12	Cyprus	9	0.6%
13	Hong Kong	8	0.5%
14	Nigeria	8	0.5%
15	South Africa	8	0.5%
16	Canada	7	0.4%
17	Australia	6	0.4%
18	Turkey	6	0.4%
19	Argentina	4	0.2%
20	Iceland	4	0.2%
21	India	4	0.2%
22	Spain	4	0.2%
23	Colombia	3	0.2%
24	Thailand	3	0.2%
25	Uzbekistan	3	0.2%
26	Viet Nam	2	0.1%
27	Morocco	2	0.1%
28	Taiwan	2	0.1%
29	Cuba	2	0.1%
30	Brazil	2	0.1%
31	Philippines	2	0.1%
32	Latvia	2	0.1%
33	Iran, Islamic Republic of	2	0.1%
34	Moldova, Republic of	2	0.1%
35	Mongolia	1	0.1%
36	Lithuania	1	0.1%
37	Malaysia	1	0.1%
38	Romania	1	0.1%
39	Switzerland	1	0.1%
40	Bangladesh	1	0.1%
41	Indonesia	1	0.1%
42	Egypt	1	0.1%
43	Ghana	1	0.1%
44	Tanzania, United Republic of	1	0.1%
45	Togo	1	0.1%