Rank	Countries/Territories	Count	Percent
1	United States	334	34.8%
2	China	269	28.1%
3	Germany	85	8.9%
4	Singapore	48	5%
5	France	33	3.4%
6	Japan	27	2.8%
7		20	2.1%
8	Canada	20	2.1%
9	United Kingdom	16	1.7%
10	Switzerland	13	1.4%
11	Korea, Republic of	10	1%
12	Colombia	9	0.9%
13	Taiwan	9	0.9%
14	Netherlands	7	0.7%
15	Iran, Islamic Republic of	7	0.7%
16	India	5	0.5%
17	Indonesia	5	0.5%
18	Cyprus	5	0.5%
19	Guatemala	4	0.4%
20	Bulgaria	4	0.4%
21	Malaysia	4	0.4%
22	Russia	4	0.4%
23	Mongolia	3	0.3%
24	Latvia	3	0.3%
25	Australia	3	0.3%
26	Norway	2	0.2%
27	Philippines	2	0.2%
28	Turkey	2	0.2%
29	Ukraine	1	0.1%
30	Saudi Arabia	1	0.1%
31	Bangladesh	1	0.1%
32	Mauritius	1	0.1%
33	Israel	1	0.1%
34	Italy	1	0.1%