Rank	Countries/Territories	Count	Percent
1	United States	475	43.3%
2	China	297	27%
3	Germany	84	7.7%
4	Canada	50	4.6%
5	France	33	3%
6	Switzerland	31	2.8%
7	Japan	23	2.1%
8		17	1.5%
9	Singapore	14	1.3%
10	India	10	0.9%
11	Australia	9	0.8%
12	Cyprus	9	0.8%
13	Russia	6	0.5%
14	Netherlands	6	0.5%
15	Ireland	5	0.5%
16	Korea, Republic of	5	0.5%
17	United Kingdom	4	0.4%
18	Philippines	3	0.3%
19	Lithuania	3	0.3%
20	Latvia	2	0.2%
21	Iran, Islamic Republic of	2	0.2%
22	Bangladesh	2	0.2%
23	Argentina	2	0.2%
24	Pakistan	2	0.2%
25	Norway	1	0.1%
26	Finland	1	0.1%
27	Hong Kong	1	0.1%
28	Luxembourg	1	0.1%