Rank	Countries/Territories	Count	Percent
1	United States	312	39.5%
2	China	250	31.7%
3	Germany	82	10.4%
4	Japan	22	2.8%
5	Tunisia	17	2.2%
6	India	16	2%
7	France	13	1.6%
8	United Kingdom	9	1.1%
9	Netherlands	7	0.9%
10	Korea, Republic of	6	0.8%
11	Italy	5	0.6%
12	Argentina	5	0.6%
13	Mexico	5	0.6%
14	Spain	5	0.6%
15	Malta	4	0.5%
16	Singapore	4	0.5%
17	Cyprus	4	0.5%
18	Canada	3	0.4%
19	Colombia	3	0.4%
20	Australia	3	0.4%
21	Brazil	2	0.3%
22	Indonesia	2	0.3%
23	Iran, Islamic Republic of	2	0.3%
24	Sweden	2	0.3%
25	Switzerland	2	0.3%
26	Turkey	1	0.1%
27	Norway	1	0.1%
28	Malaysia	1	0.1%
29	Bulgaria	1	0.1%