Rank	Countries/Territories	Count	Percent
1	United States	583	42.2%
2	China	385	27.8%
3	Germany	189	13.7%
4	Russia	33	2.4%
5	India	32	2.3%
6	Japan	29	2.1%
7	Netherlands	22	1.6%
8	Switzerland	15	1.1%
9	Korea, Republic of	10	0.7%
10	Australia	10	0.7%
11	Canada	7	0.5%
12	France	7	0.5%
13	Hong Kong	7	0.5%
14	Taiwan	5	0.4%
15	Brazil	5	0.4%
16	Iran, Islamic Republic of	5	0.4%
17	Ireland	4	0.3%
18	Italy	4	0.3%
19	Cyprus	4	0.3%
20	Greece	4	0.3%
21	Spain	3	0.2%
22	Sweden	2	0.1%
23	United Kingdom	2	0.1%
24	Mexico	2	0.1%
25	Philippines	2	0.1%
26	Portugal	2	0.1%
27	Czech Republic	2	0.1%
28	Argentina	2	0.1%
29	Algeria	1	0.1%
30	Macao	1	0.1%
31	Mauritius	1	0.1%
32	Peru	1	0.1%
33	Mongolia	1	0.1%
34	Singapore	1	0.1%