Rank	Countries/Territories	Count	Percent
1	United States	373	43.3%
2	China	218	25.3%
3	Germany	78	9.1%
4	Korea, Republic of	42	4.9%
5	Japan	19	2.2%
6	France	15	1.7%
7	Netherlands	12	1.4%
8	Switzerland	10	1.2%
9	Australia	9	1%
10	South Africa	7	0.8%
11	Spain	6	0.7%
12	Pakistan	6	0.7%
13	India	6	0.7%
14	Malaysia	5	0.6%
15	Viet Nam	5	0.6%
16	Uganda	3	0.3%
17	Taiwan	3	0.3%
18	Iran, Islamic Republic of	3	0.3%
19	Belarus	3	0.3%
20	Canada	3	0.3%
21	Ethiopia	3	0.3%
22	Colombia	2	0.2%
23	Cyprus	2	0.2%
24	Argentina	2	0.2%
25	Hong Kong	2	0.2%
26	Tajikistan	2	0.2%
27	Thailand	2	0.2%
28	Senegal	2	0.2%
29	Mongolia	2	0.2%
30	United Kingdom	2	0.2%
31	Zambia	2	0.2%
32	Syrian Arab Republic	1	0.1%
33	Lithuania	1	0.1%
34	Philippines	1	0.1%
35	Romania	1	0.1%
36	Slovakia	1	0.1%
37	Sweden	1	0.1%
38	Turkey	1	0.1%
39	Ireland	1	0.1%
40	Israel	1	0.1%
41	Indonesia	1	0.1%
42	Ghana	1	0.1%
43	Algeria	1	0.1%