Rank	Countries/Territories	Count	Percent
1	United States	619	33.5%
2	China	478	25.9%
3	Germany	123	6.7%
4	Taiwan	69	3.7%
5	Norway	68	3.7%
6	Netherlands	38	2.1%
7	France	37	2%
8	Japan	31	1.7%
9	Canada	29	1.6%
10	Brazil	27	1.5%
11	United Kingdom	27	1.5%
12	South Africa	26	1.4%
13	Singapore	24	1.3%
14	Australia	23	1.2%
15	India	20	1.1%
16	Turkey	17	0.9%
17	Korea, Republic of	14	0.8%
18	Iran, Islamic Republic of	13	0.7%
19	Belgium	13	0.7%
20	Argentina	12	0.6%
21	Latvia	11	0.6%
22	Thailand	11	0.6%
23	Ireland	10	0.5%
24	Italy	10	0.5%
25	Cyprus	7	0.4%
26	Egypt	6	0.3%
27	Pakistan	6	0.3%
28	Nigeria	6	0.3%
29	Spain	5	0.3%
30	Serbia	5	0.3%
31	Switzerland	5	0.3%
32	Ukraine	5	0.3%
33	Russia	4	0.2%
34	Hong Kong	4	0.2%
35	Ghana	4	0.2%
36	Denmark	4	0.2%
37	Colombia	4	0.2%
38	Austria	4	0.2%
39		3	0.2%
40	Sweden	3	0.2%
41	Uganda	3	0.2%
42	Slovenia	2	0.1%
43	Viet Nam	2	0.1%
44	Guatemala	2	0.1%
45	Estonia	2	0.1%
46	Papua New Guinea	2	0.1%
47	Lebanon	2	0.1%
48	Mexico	2	0.1%
49	Kuwait	1	0.1%
50	Portugal	1	0.1%
51	Romania	1	0.1%
52	Kenya	1	0.1%
53	Chile	1	0.1%
54	Rwanda	1	0.1%