Rank	Countries/Territories	Count	Percent
1	United States	591	43.8%
2	China	185	13.7%
3	Japan	167	12.4%
4	Germany	96	7.1%
5	Singapore	47	3.5%
6	Canada	35	2.6%
7	France	30	2.2%
8	India	27	2%
9	Netherlands	21	1.6%
10	Spain	14	1%
11	Romania	13	1%
12	Italy	13	1%
13	Australia	8	0.6%
14	Ukraine	8	0.6%
15	Hong Kong	6	0.4%
16	Egypt	5	0.4%
17	Ethiopia	5	0.4%
18	Argentina	5	0.4%
19	Colombia	5	0.4%
20	Israel	5	0.4%
21	Portugal	5	0.4%
22	Mexico	4	0.3%
23	Cyprus	4	0.3%
24	Brazil	4	0.3%
25	Indonesia	4	0.3%
26	Iran, Islamic Republic of	4	0.3%
27	Turkey	4	0.3%
28	Sweden	3	0.2%
29	Taiwan	3	0.2%
30	Burundi	3	0.2%
31	Korea, Republic of	3	0.2%
32	Mauritius	3	0.2%
33	Norway	2	0.1%
34	Lithuania	2	0.1%
35	Mongolia	2	0.1%
36	Bangladesh	2	0.1%
37	Greece	2	0.1%
38	United Kingdom	2	0.1%
39	Slovakia	1	0.1%
40	South Africa	1	0.1%
41	Malaysia	1	0.1%
42	Palestine, State of	1	0.1%
43	Nigeria	1	0.1%
44	Russia	1	0.1%