Rank	Countries/Territories	Count	Percent
1	United States	581	45.6%
2	China	248	19.5%
3	Germany	142	11.1%
4	Ireland	42	3.3%
5	India	33	2.6%
6	France	31	2.4%
7	Canada	23	1.8%
8	Netherlands	21	1.6%
9	Japan	15	1.2%
10	Norway	13	1%
11	Switzerland	13	1%
12	Bulgaria	12	0.9%
13	Spain	10	0.8%
14	Cyprus	9	0.7%
15	Australia	6	0.5%
16	Austria	6	0.5%
17	Indonesia	6	0.5%
18	Singapore	6	0.5%
19	Italy	5	0.4%
20	Korea, Republic of	5	0.4%
21	United Kingdom	5	0.4%
22	Zambia	4	0.3%
23	Argentina	4	0.3%
24	Ethiopia	3	0.2%
25	Russia	3	0.2%
26	Ukraine	3	0.2%
27	Viet Nam	3	0.2%
28	Uganda	2	0.2%
29	Malaysia	2	0.2%
30	Kenya	2	0.2%
31	Philippines	2	0.2%
32	Israel	2	0.2%
33	Hong Kong	2	0.2%
34	Hungary	1	0.1%
35	Bahrain	1	0.1%
36	Belgium	1	0.1%
37	Bosnia and Herzegovina	1	0.1%
38	Romania	1	0.1%
39	Pakistan	1	0.1%
40	Mongolia	1	0.1%
41	Taiwan	1	0.1%
42	Saudi Arabia	1	0.1%
43	Yemen	1	0.1%