Rank	Countries/Territories	Count	Percent
1	United States	599	48%
2	China	256	20.5%
3	Germany	143	11.5%
4	Japan	31	2.5%
5	Taiwan	30	2.4%
6	Netherlands	23	1.8%
7	Ukraine	22	1.8%
8	Canada	19	1.5%
9	Ireland	16	1.3%
10	India	12	1%
11	France	12	1%
12	Singapore	11	0.9%
13	Korea, Republic of	9	0.7%
14	Italy	8	0.6%
15	Bulgaria	7	0.6%
16	South Africa	6	0.5%
17	United Kingdom	6	0.5%
18	Romania	5	0.4%
19	Russia	4	0.3%
20	Norway	4	0.3%
21	Australia	4	0.3%
22	Cyprus	3	0.2%
23	Argentina	2	0.2%
24	Israel	2	0.2%
25	Oman	2	0.2%
26	Thailand	2	0.2%
27	Turkey	2	0.2%
28	Poland	2	0.2%
29	Palestine, State of	1	0.1%
30	Philippines	1	0.1%
31	Spain	1	0.1%
32	Greece	1	0.1%
33	Belgium	1	0.1%
34	Brazil	1	0.1%