Rank	Countries/Territories	Count	Percent
1	United States	343	28.9%
2	China	203	17.1%
3	Germany	102	8.6%
4	United Kingdom	67	5.7%
5	India	58	4.9%
6	Canada	48	4.1%
7	Iran, Islamic Republic of	36	3%
8	Hong Kong	32	2.7%
9	Brazil	25	2.1%
10	Japan	23	1.9%
11	Netherlands	21	1.8%
12	Australia	20	1.7%
13	Pakistan	20	1.7%
14		17	1.4%
15	Ireland	16	1.4%
16	France	13	1.1%
17	Spain	13	1.1%
18	Sweden	9	0.8%
19	Korea, Republic of	9	0.8%
20	Ukraine	8	0.7%
21	Russia	8	0.7%
22	Malaysia	7	0.6%
23	Czech Republic	6	0.5%
24	Turkey	6	0.5%
25	Singapore	5	0.4%
26	Ecuador	5	0.4%
27	Italy	5	0.4%
28	Nigeria	5	0.4%
29	Norway	4	0.3%
30	Cyprus	4	0.3%
31	Poland	4	0.3%
32	Taiwan	4	0.3%
33	Nepal	3	0.3%
34	Algeria	3	0.3%
35	Argentina	3	0.3%
36	Bangladesh	3	0.3%
37	New Zealand	3	0.3%
38	Mexico	3	0.3%
39	Mongolia	2	0.2%
40	Luxembourg	2	0.2%
41	Jordan	2	0.2%
42	Israel	2	0.2%
43	Egypt	2	0.2%
44	Greece	2	0.2%
45	Puerto Rico	2	0.2%
46	Romania	1	0.1%
47	Sri Lanka	1	0.1%
48	United Arab Emirates	1	0.1%
49	Finland	1	0.1%
50	Iraq	1	0.1%
51	Libya	1	0.1%
52	Lithuania	1	0.1%