Rank	Countries/Territories	Count	Percent
1	United States	529	46.6%
2	China	238	21%
3	Germany	147	12.9%
4	Australia	36	3.2%
5	United Kingdom	22	1.9%
6	Netherlands	19	1.7%
7	Canada	18	1.6%
8	Spain	16	1.4%
9		15	1.3%
10	Japan	13	1.1%
11	France	12	1.1%
12	Singapore	9	0.8%
13	Ukraine	6	0.5%
14	Ireland	6	0.5%
15	Italy	5	0.4%
16	India	4	0.4%
17	Hong Kong	3	0.3%
18	Iran, Islamic Republic of	3	0.3%
19	Iraq	3	0.3%
20	Brazil	3	0.3%
21	Cyprus	3	0.3%
22	Nepal	3	0.3%
23	Russia	3	0.3%
24	Saudi Arabia	2	0.2%
25	Taiwan	2	0.2%
26	Turkey	2	0.2%
27	Oman	2	0.2%
28	Philippines	2	0.2%
29	Romania	2	0.2%
30	Indonesia	2	0.2%
31	Hungary	1	0.1%
32	Israel	1	0.1%
33	Denmark	1	0.1%
34	Finland	1	0.1%
35	Norway	1	0.1%
36	Mexico	1	0.1%