Rank	Countries/Territories	Count	Percent
1	United States	449	44.7%
2	China	325	32.3%
3	Germany	55	5.5%
4	Canada	23	2.3%
5	Australia	18	1.8%
6	Korea, Republic of	17	1.7%
7	Netherlands	17	1.7%
8	Slovenia	13	1.3%
9	Japan	11	1.1%
10	United Kingdom	8	0.8%
11	Brazil	8	0.8%
12	Greece	7	0.7%
13	France	7	0.7%
14	Hong Kong	6	0.6%
15	India	4	0.4%
16	Norway	4	0.4%
17	Cyprus	3	0.3%
18	Taiwan	3	0.3%
19	Romania	3	0.3%
20	Spain	2	0.2%
21	Switzerland	2	0.2%
22	Ukraine	2	0.2%
23	Finland	2	0.2%
24	Indonesia	2	0.2%
25	Ireland	2	0.2%
26	Israel	2	0.2%
27	Macao	2	0.2%
28	Malaysia	1	0.1%
29	Mongolia	1	0.1%
30	Panama	1	0.1%
31	Kyrgyzstan	1	0.1%
32	Tunisia	1	0.1%
33	Russia	1	0.1%
34	Saudi Arabia	1	0.1%
35	Singapore	1	0.1%