Rank	Countries/Territories	Count	Percent
1	United States	284	32.4%
2	China	275	31.4%
3	Germany	106	12.1%
4	Japan	43	4.9%
5	Singapore	15	1.7%
6	Algeria	13	1.5%
7	France	12	1.4%
8	Netherlands	10	1.1%
9	India	9	1%
10	Italy	8	0.9%
11	Hong Kong	7	0.8%
12	Russia	7	0.8%
13	Canada	6	0.7%
14	Australia	6	0.7%
15	Korea, Republic of	6	0.7%
16	Spain	5	0.6%
17	Sweden	5	0.6%
18	Ireland	5	0.6%
19	Thailand	5	0.6%
20	United Kingdom	5	0.6%
21	Iran, Islamic Republic of	4	0.5%
22	Cuba	4	0.5%
23	Indonesia	3	0.3%
24	Mexico	3	0.3%
25	Romania	3	0.3%
26	Turkey	3	0.3%
27	Taiwan	3	0.3%
28	Viet Nam	2	0.2%
29	Ukraine	2	0.2%
30	Egypt	2	0.2%
31	Finland	2	0.2%
32	Belgium	2	0.2%
33	Brazil	2	0.2%
34	Argentina	1	0.1%
35	Cyprus	1	0.1%
36	Denmark	1	0.1%
37	Switzerland	1	0.1%
38	Kenya	1	0.1%
39	Nigeria	1	0.1%
40	Norway	1	0.1%
41	Philippines	1	0.1%
42	United Arab Emirates	1	0.1%
43	Uganda	1	0.1%