Rank	Countries/Territories	Count	Percent
1	United States	727	51.5%
2	China	384	27.2%
3	Germany	109	7.7%
4	Japan	24	1.7%
5	Canada	23	1.6%
6	United Kingdom	16	1.1%
7	Singapore	16	1.1%
8	France	15	1.1%
9	India	13	0.9%
10	Netherlands	11	0.8%
11	Australia	9	0.6%
12	Argentina	7	0.5%
13	Iran, Islamic Republic of	7	0.5%
14	Egypt	6	0.4%
15	Spain	6	0.4%
16	Norway	4	0.3%
17	Ukraine	4	0.3%
18	Austria	4	0.3%
19	Georgia	3	0.2%
20	Turkey	3	0.2%
21	Mongolia	3	0.2%
22	Sweden	3	0.2%
23	Russia	2	0.1%
24	South Africa	2	0.1%
25	Hong Kong	2	0.1%
26	Chile	2	0.1%
27	Cyprus	2	0.1%
28	Mexico	1	0.1%
29	Poland	1	0.1%
30	Switzerland	1	0.1%
31	Taiwan	1	0.1%