Rank	Countries/Territories	Count	Percent
1	United States	476	36.6%
2	China	418	32.1%
3	Germany	85	6.5%
4	Japan	51	3.9%
5	Canada	41	3.1%
6	Saudi Arabia	32	2.5%
7	Singapore	30	2.3%
8	France	24	1.8%
9	Sweden	14	1.1%
10	United Kingdom	13	1%
11	Norway	12	0.9%
12	Romania	11	0.8%
13	Australia	10	0.8%
14	Korea, Republic of	9	0.7%
15	Netherlands	8	0.6%
16	Morocco	7	0.5%
17	Hong Kong	6	0.5%
18	Russia	5	0.4%
19	Taiwan	5	0.4%
20	Ukraine	4	0.3%
21	India	4	0.3%
22	Iran, Islamic Republic of	4	0.3%
23	Belgium	4	0.3%
24	Cyprus	4	0.3%
25	Denmark	4	0.3%
26	Mongolia	3	0.2%
27	New Zealand	2	0.2%
28	Nigeria	2	0.2%
29	Spain	2	0.2%
30	Turkey	2	0.2%
31	Egypt	2	0.2%
32	Argentina	2	0.2%
33	Ireland	2	0.2%
34	Monaco	2	0.2%
35	Austria	1	0.1%
36	Switzerland	1	0.1%