Rank	Countries/Territories	Count	Percent
1	United States	271	33.9%
2	China	146	18.2%
3	Germany	67	8.4%
4	Portugal	58	7.2%
5	United Kingdom	29	3.6%
6	Australia	27	3.4%
7	India	21	2.6%
8	Netherlands	18	2.2%
9	Spain	15	1.9%
10	Egypt	14	1.8%
11	Japan	13	1.6%
12	Canada	12	1.5%
13	Ireland	10	1.2%
14	Iran, Islamic Republic of	8	1%
15	Brazil	7	0.9%
16	Singapore	7	0.9%
17	Nigeria	6	0.8%
18	Italy	6	0.8%
19	Chile	6	0.8%
20	Greece	6	0.8%
21	Turkey	6	0.8%
22	France	5	0.6%
23	Ghana	4	0.5%
24	Hong Kong	3	0.4%
25	New Zealand	3	0.4%
26	Korea, Republic of	3	0.4%
27	Pakistan	3	0.4%
28	Taiwan	3	0.4%
29	Sri Lanka	2	0.2%
30	Sweden	2	0.2%
31	Philippines	2	0.2%
32	South Africa	2	0.2%
33	Russia	2	0.2%
34	Mexico	2	0.2%
35	Estonia	2	0.2%
36	Cyprus	2	0.2%
37	Finland	1	0.1%
38	Iceland	1	0.1%
39	Indonesia	1	0.1%
40	Morocco	1	0.1%
41	Norway	1	0.1%
42	Ukraine	1	0.1%
43	Viet Nam	1	0.1%