Rank	Countries/Territories	Count	Percent
1	China	328	25.7%
2	United States	318	25%
3	Switzerland	130	10.2%
4	Czech Republic	101	7.9%
5	Germany	66	5.2%
6	Denmark	44	3.5%
7	India	31	2.4%
8	Singapore	28	2.2%
9	United Kingdom	24	1.9%
10	Hong Kong	22	1.7%
11	Japan	21	1.6%
12	Iran, Islamic Republic of	13	1%
13	Taiwan	13	1%
14	Israel	11	0.9%
15	Australia	10	0.8%
16	Turkey	10	0.8%
17	Thailand	7	0.5%
18	Sri Lanka	6	0.5%
19	Russia	6	0.5%
20	Serbia	6	0.5%
21	Argentina	6	0.5%
22	Italy	6	0.5%
23	Netherlands	6	0.5%
24	Poland	5	0.4%
25	Portugal	5	0.4%
26	Egypt	5	0.4%
27	Canada	4	0.3%
28	France	4	0.3%
29	Ireland	4	0.3%
30	Pakistan	3	0.2%
31	Greece	3	0.2%
32	Guatemala	2	0.2%
33	Finland	2	0.2%
34	Colombia	2	0.2%
35	Paraguay	2	0.2%
36	Romania	2	0.2%
37	Mongolia	2	0.2%
38	Lebanon	2	0.2%
39	Norway	2	0.2%
40	Viet Nam	1	0.1%
41	Turkmenistan	1	0.1%
42	Luxembourg	1	0.1%
43	Malaysia	1	0.1%
44	Korea, Republic of	1	0.1%
45	Nigeria	1	0.1%
46	Peru	1	0.1%
47	Cyprus	1	0.1%
48	Austria	1	0.1%
49	Belgium	1	0.1%
50	Brazil	1	0.1%
51	Hungary	1	0.1%