Rank	Countries/Territories	Count	Percent
1	United States	671	46.9%
2	China	332	23.2%
3	Germany	131	9.2%
4	Japan	63	4.4%
5	France	39	2.7%
6	Singapore	22	1.5%
7	Russia	17	1.2%
8	Hong Kong	16	1.1%
9	Canada	14	1%
10	Ireland	11	0.8%
11	Argentina	10	0.7%
12	Netherlands	8	0.6%
13	United Kingdom	8	0.6%
14	Iran, Islamic Republic of	7	0.5%
15	Australia	7	0.5%
16	Cyprus	7	0.5%
17	Ukraine	6	0.4%
18	Viet Nam	5	0.3%
19	Korea, Republic of	5	0.3%
20	Mauritius	4	0.3%
21	Nigeria	4	0.3%
22	Panama	4	0.3%
23	Switzerland	3	0.2%
24	Norway	3	0.2%
25	Latvia	3	0.2%
26	Jordan	3	0.2%
27	Italy	3	0.2%
28	Austria	3	0.2%
29	Chile	3	0.2%
30	Brazil	3	0.2%
31	Bangladesh	2	0.1%
32	Indonesia	2	0.1%
33	Colombia	2	0.1%
34	Mongolia	2	0.1%
35	Portugal	2	0.1%
36	Turkey	1	0.1%
37	Pakistan	1	0.1%
38	Mexico	1	0.1%
39	Bulgaria	1	0.1%
40	United Arab Emirates	1	0.1%