Rank	Countries/Territories	Count	Percent
1	United States	542	54.7%
2	China	189	19.1%
3	Germany	61	6.2%
4	France	19	1.9%
5	Taiwan	18	1.8%
6	Netherlands	17	1.7%
7	Singapore	16	1.6%
8	India	15	1.5%
9	Japan	14	1.4%
10	Korea, Republic of	10	1%
11	Iran, Islamic Republic of	10	1%
12	Canada	10	1%
13	Cyprus	7	0.7%
14	Morocco	7	0.7%
15	Hong Kong	6	0.6%
16	Lithuania	6	0.6%
17	Denmark	5	0.5%
18	Ireland	4	0.4%
19	Italy	4	0.4%
20	South Africa	4	0.4%
21	Mongolia	3	0.3%
22	Turkey	3	0.3%
23	Sweden	3	0.3%
24	Australia	3	0.3%
25	Indonesia	2	0.2%
26	United Kingdom	2	0.2%
27	Mexico	2	0.2%
28	Norway	2	0.2%
29	Russia	2	0.2%
30	Spain	1	0.1%
31	Tanzania, United Republic of	1	0.1%
32	Malaysia	1	0.1%
33	Colombia	1	0.1%