Rank	Countries/Territories	Count	Percent
1	China	257	34.4%
2	United States	253	33.9%
3	Germany	49	6.6%
4	Japan	28	3.7%
5	India	18	2.4%
6	Canada	18	2.4%
7	Netherlands	12	1.6%
8	Singapore	11	1.5%
9	Tanzania, United Republic of	10	1.3%
10	France	10	1.3%
11	United Kingdom	10	1.3%
12	Finland	6	0.8%
13	Pakistan	6	0.8%
14	Ireland	6	0.8%
15	Hong Kong	5	0.7%
16	Iraq	4	0.5%
17	Korea, Republic of	4	0.5%
18	Cyprus	4	0.5%
19	Spain	4	0.5%
20	Morocco	3	0.4%
21	Russia	3	0.4%
22	Egypt	3	0.4%
23	Australia	3	0.4%
24	Denmark	2	0.3%
25	Mongolia	2	0.3%
26	Romania	2	0.3%
27	Switzerland	2	0.3%
28	Taiwan	2	0.3%
29	Zambia	2	0.3%
30	Tunisia	1	0.1%
31	Turkey	1	0.1%
32	Peru	1	0.1%
33	Philippines	1	0.1%
34	Iran, Islamic Republic of	1	0.1%
35	Austria	1	0.1%
36	Brazil	1	0.1%
37	Argentina	1	0.1%