Rank	Countries/Territories	Count	Percent
1	China	271	34.6%
2	United States	179	22.9%
3	Germany	56	7.2%
4	Switzerland	44	5.6%
5	Japan	38	4.9%
6	India	21	2.7%
7	United Kingdom	18	2.3%
8	Netherlands	10	1.3%
9	Hong Kong	10	1.3%
10	Korea, Republic of	10	1.3%
11	Portugal	9	1.1%
12	Iran, Islamic Republic of	9	1.1%
13	France	9	1.1%
14	Italy	7	0.9%
15	Taiwan	7	0.9%
16	Singapore	6	0.8%
17	Belgium	6	0.8%
18	Greece	5	0.6%
19	Ireland	5	0.6%
20	Peru	5	0.6%
21	Sweden	5	0.6%
22	Australia	4	0.5%
23	Austria	4	0.5%
24	Cyprus	3	0.4%
25	Ghana	3	0.4%
26	Romania	3	0.4%
27	Russia	3	0.4%
28	Spain	3	0.4%
29	Nepal	2	0.3%
30	South Africa	2	0.3%
31	Thailand	2	0.3%
32	Nigeria	2	0.3%
33	Kazakhstan	2	0.3%
34	Lithuania	2	0.3%
35	Mexico	2	0.3%
36	Argentina	2	0.3%
37	Ethiopia	2	0.3%
38	Czech Republic	2	0.3%
39	Canada	2	0.3%
40	Egypt	1	0.1%
41	Iraq	1	0.1%
42	Mongolia	1	0.1%
43	Israel	1	0.1%
44	Serbia	1	0.1%
45	Ukraine	1	0.1%
46	Poland	1	0.1%
47	Viet Nam	1	0.1%