Rank	Countries/Territories	Count	Percent
1	United States	325	38.3%
2	China	287	33.8%
3	Germany	67	7.9%
4	India	42	4.9%
5	South Africa	13	1.5%
6	Japan	12	1.4%
7	Russia	10	1.2%
8	Singapore	10	1.2%
9	Canada	9	1.1%
10	Hong Kong	8	0.9%
11	Iran, Islamic Republic of	7	0.8%
12	Portugal	7	0.8%
13	United Kingdom	6	0.7%
14	Switzerland	6	0.7%
15	Viet Nam	6	0.7%
16	Ireland	6	0.7%
17	Cyprus	6	0.7%
18	Netherlands	5	0.6%
19	France	3	0.4%
20	Thailand	3	0.4%
21	Brazil	2	0.2%
22	Indonesia	2	0.2%
23	Spain	2	0.2%
24	Sweden	2	0.2%
25	Slovakia	1	0.1%
26	Norway	1	0.1%
27	Italy	1	0.1%