Rank	Countries/Territories	Count	Percent
1	United States	368	26.7%
2	China	361	26.2%
3	Switzerland	130	9.4%
4	Czech Republic	101	7.3%
5	Germany	74	5.4%
6	Denmark	44	3.2%
7	India	34	2.5%
8	Singapore	28	2%
9	United Kingdom	25	1.8%
10	Hong Kong	22	1.6%
11	Japan	21	1.5%
12	Taiwan	14	1%
13	Iran, Islamic Republic of	13	0.9%
14	Israel	12	0.9%
15	Italy	10	0.7%
16	Australia	10	0.7%
17	Turkey	10	0.7%
18	Thailand	7	0.5%
19	Sri Lanka	6	0.4%
20	Russia	6	0.4%
21	Serbia	6	0.4%
22	Argentina	6	0.4%
23	Ireland	6	0.4%
24	Netherlands	6	0.4%
25	Egypt	5	0.4%
26	Poland	5	0.4%
27	Portugal	5	0.4%
28	Canada	4	0.3%
29	France	4	0.3%
30	Pakistan	3	0.2%
31	Greece	3	0.2%
32	Romania	3	0.2%
33	Guatemala	2	0.1%
34	Finland	2	0.1%
35	Colombia	2	0.1%
36	Paraguay	2	0.1%
37	Mongolia	2	0.1%
38	Norway	2	0.1%
39	Lebanon	2	0.1%
40	Iraq	2	0.1%
41	Korea, Republic of	1	0.1%
42	Luxembourg	1	0.1%
43	Malaysia	1	0.1%
44	Nigeria	1	0.1%
45	Peru	1	0.1%
46	Cyprus	1	0.1%
47	Austria	1	0.1%
48	Belgium	1	0.1%
49	Brazil	1	0.1%
50	Hungary	1	0.1%
51	Turkmenistan	1	0.1%
52	Viet Nam	1	0.1%