Rank	Countries/Territories	Count	Percent
1	United States	506	38.8%
2	China	422	32.4%
3	Germany	126	9.7%
4	Canada	26	2%
5	United Kingdom	23	1.8%
6	France	21	1.6%
7	Singapore	18	1.4%
8	Spain	12	0.9%
9	South Africa	11	0.8%
10	Netherlands	11	0.8%
11	Japan	10	0.8%
12	Hong Kong	10	0.8%
13	India	10	0.8%
14	Australia	8	0.6%
15	Cyprus	7	0.5%
16	Norway	7	0.5%
17	Brazil	6	0.5%
18	United Arab Emirates	6	0.5%
19	Nepal	5	0.4%
20	Korea, Republic of	5	0.4%
21	Russia	4	0.3%
22	Ireland	4	0.3%
23	Italy	4	0.3%
24	Ukraine	3	0.2%
25	Switzerland	2	0.2%
26	Denmark	2	0.2%
27	Ethiopia	2	0.2%
28	Colombia	2	0.2%
29	Croatia	2	0.2%
30	Austria	2	0.2%
31	Belgium	2	0.2%
32	Chile	2	0.2%
33	Pakistan	2	0.2%
34	Philippines	2	0.2%
35	Poland	2	0.2%
36	Romania	2	0.2%
37	Latvia	2	0.2%
38	Nigeria	2	0.2%
39	Malaysia	2	0.2%
40	Mexico	2	0.2%
41	Lithuania	1	0.1%
42	Kenya	1	0.1%
43	Indonesia	1	0.1%
44	Tanzania, United Republic of	1	0.1%
45	Thailand	1	0.1%
46	Viet Nam	1	0.1%
47	Zimbabwe	1	0.1%