Rank	Countries/Territories	Count	Percent
1	United States	424	43.9%
2	China	345	35.8%
3	Germany	64	6.6%
4	Switzerland	13	1.3%
5	Japan	11	1.1%
6	Canada	11	1.1%
7	France	10	1%
8	Netherlands	10	1%
9	Palestine, State of	10	1%
10	Hong Kong	8	0.8%
11	Belarus	6	0.6%
12	United Kingdom	6	0.6%
13	Cyprus	5	0.5%
14	Australia	4	0.4%
15	India	4	0.4%
16	Indonesia	3	0.3%
17	Finland	3	0.3%
18	Taiwan	3	0.3%
19	Turkey	2	0.2%
20	Sweden	2	0.2%
21	Kenya	2	0.2%
22	Israel	2	0.2%
23	Moldova, Republic of	2	0.2%
24	Belgium	2	0.2%
25	Brazil	2	0.2%
26	Czech Republic	2	0.2%
27	Egypt	2	0.2%
28	Argentina	1	0.1%
29	Georgia	1	0.1%
30	Iran, Islamic Republic of	1	0.1%
31	Ireland	1	0.1%
32	Luxembourg	1	0.1%
33	Nigeria	1	0.1%
34	Viet Nam	1	0.1%