Rank	Countries/Territories	Count	Percent
1	United States	503	37.9%
2	China	460	34.6%
3	Germany	181	13.6%
4	Japan	24	1.8%
5	Canada	23	1.7%
6	France	16	1.2%
7	Indonesia	13	1%
8	Hong Kong	12	0.9%
9	India	10	0.8%
10	Australia	10	0.8%
11	Taiwan	9	0.7%
12	Netherlands	9	0.7%
13	Sweden	7	0.5%
14	Korea, Republic of	6	0.5%
15	Cyprus	5	0.4%
16	Singapore	5	0.4%
17	Malaysia	4	0.3%
18	Mongolia	3	0.2%
19	United Kingdom	3	0.2%
20	Argentina	3	0.2%
21	Iran, Islamic Republic of	3	0.2%
22	Lebanon	2	0.2%
23	Luxembourg	2	0.2%
24	Denmark	2	0.2%
25	Ghana	2	0.2%
26	Russia	2	0.2%
27	Pakistan	2	0.2%
28	Portugal	2	0.2%
29	Romania	1	0.1%
30	South Africa	1	0.1%
31	New Zealand	1	0.1%
32	Ukraine	1	0.1%
33	Ireland	1	0.1%