Rank	Countries/Territories	Count	Percent
1	United States	662	39.5%
2	China	336	20.1%
3	Germany	97	5.8%
4	Australia	66	3.9%
5	Romania	40	2.4%
6	India	32	1.9%
7	France	31	1.9%
8	Spain	31	1.9%
9	Italy	30	1.8%
10	Netherlands	29	1.7%
11	United Kingdom	29	1.7%
12	Japan	26	1.6%
13	Canada	20	1.2%
14	Iran, Islamic Republic of	19	1.1%
15	Ireland	17	1%
16	Korea, Republic of	15	0.9%
17	Sweden	13	0.8%
18	Moldova, Republic of	12	0.7%
19	Czech Republic	11	0.7%
20	Austria	10	0.6%
21	Hong Kong	10	0.6%
22	Turkey	10	0.6%
23	Singapore	9	0.5%
24	Brazil	9	0.5%
25	Belgium	8	0.5%
26	Mexico	8	0.5%
27	Thailand	7	0.4%
28	Taiwan	6	0.4%
29	Russia	6	0.4%
30	South Africa	5	0.3%
31	Viet Nam	5	0.3%
32	Cyprus	5	0.3%
33	Ethiopia	4	0.2%
34	Greece	4	0.2%
35	Bulgaria	4	0.2%
36	Hungary	4	0.2%
37	Poland	4	0.2%
38	Portugal	3	0.2%
39	Switzerland	3	0.2%
40	Indonesia	3	0.2%
41	Iraq	3	0.2%
42	Guatemala	3	0.2%
43	Denmark	3	0.2%
44	Egypt	3	0.2%
45	Colombia	2	0.1%
46	Myanmar	2	0.1%
47	Malaysia	2	0.1%
48	Norway	2	0.1%
49	Pakistan	2	0.1%
50	Venezuela, Bolivarian Republic of	2	0.1%
51	Philippines	1	0.1%
52	Saudi Arabia	1	0.1%
53	Ukraine	1	0.1%
54	United Arab Emirates	1	0.1%
55	Morocco	1	0.1%
56	Chile	1	0.1%
57	Algeria	1	0.1%
58	Bangladesh	1	0.1%