Rank	Countries/Territories	Count	Percent
1	United States	351	35.7%
2	China	227	23.1%
3	Germany	84	8.5%
4	Canada	22	2.2%
5	Israel	22	2.2%
6	France	21	2.1%
7	Italy	20	2%
8	Japan	20	2%
9	Korea, Republic of	16	1.6%
10	United Kingdom	16	1.6%
11	Ukraine	15	1.5%
12	India	14	1.4%
13	Iran, Islamic Republic of	14	1.4%
14	Singapore	13	1.3%
15	Thailand	12	1.2%
16	Ireland	11	1.1%
17	Australia	11	1.1%
18	Hong Kong	9	0.9%
19	Brazil	8	0.8%
20	Netherlands	8	0.8%
21	Saudi Arabia	8	0.8%
22	Spain	7	0.7%
23	Mexico	6	0.6%
24	Tanzania, United Republic of	5	0.5%
25	Turkey	3	0.3%
26	Russia	3	0.3%
27	Taiwan	3	0.3%
28	Serbia	3	0.3%
29	Bulgaria	3	0.3%
30	Bangladesh	3	0.3%
31	Cyprus	3	0.3%
32	Ecuador	2	0.2%
33	Argentina	2	0.2%
34	Palestine, State of	2	0.2%
35	Oman	2	0.2%
36	Indonesia	2	0.2%
37	Lebanon	2	0.2%
38	Sweden	2	0.2%
39	Mauritius	1	0.1%
40	Iraq	1	0.1%
41	Pakistan	1	0.1%
42	Poland	1	0.1%
43	Algeria	1	0.1%
44	Colombia	1	0.1%
45	Egypt	1	0.1%
46	Czech Republic	1	0.1%
47	Hungary	1	0.1%