Rank	Countries/Territories	Count	Percent
1	United States	518	44.3%
2	China	285	24.4%
3	Germany	67	5.7%
4	Japan	39	3.3%
5	Canada	36	3.1%
6	India	32	2.7%
7	France	27	2.3%
8	United Kingdom	26	2.2%
9	Netherlands	23	2%
10	Australia	18	1.5%
11	Taiwan	17	1.5%
12	Iran, Islamic Republic of	13	1.1%
13	Singapore	8	0.7%
14	Malaysia	8	0.7%
15	Korea, Republic of	7	0.6%
16	Hong Kong	7	0.6%
17	Argentina	6	0.5%
18	Norway	5	0.4%
19	Lebanon	3	0.3%
20	Egypt	3	0.3%
21	Italy	3	0.3%
22	Kenya	2	0.2%
23	Finland	2	0.2%
24	Cyprus	2	0.2%
25	Brazil	2	0.2%
26	Philippines	2	0.2%
27	Russia	2	0.2%
28	Ukraine	2	0.2%
29	Switzerland	1	0.1%
30	Turkey	1	0.1%
31	Paraguay	1	0.1%
32	Mexico	1	0.1%
33	Israel	1	0.1%