Rank	Countries/Territories	Count	Percent
1	United States	463	38.5%
2	China	319	26.5%
3	Germany	97	8.1%
4	Australia	63	5.2%
5	Singapore	41	3.4%
6	Japan	29	2.4%
7	United Kingdom	24	2%
8	France	22	1.8%
9	Canada	20	1.7%
10	Netherlands	17	1.4%
11	Switzerland	16	1.3%
12	Iran, Islamic Republic of	12	1%
13	Hong Kong	12	1%
14	Argentina	8	0.7%
15	Russia	8	0.7%
16	Korea, Republic of	7	0.6%
17	Cyprus	6	0.5%
18	Turkey	6	0.5%
19	Brazil	5	0.4%
20	Ireland	5	0.4%
21	Italy	4	0.3%
22	Sweden	3	0.2%
23	South Africa	2	0.2%
24	Pakistan	2	0.2%
25	Israel	2	0.2%
26	Greece	2	0.2%
27	Bangladesh	2	0.2%
28	Finland	2	0.2%
29	Indonesia	1	0.1%
30	Lithuania	1	0.1%
31	Romania	1	0.1%
32	Norway	1	0.1%
33	Ukraine	1	0.1%