Rank	Countries/Territories	Count	Percent
1	China	310	32.8%
2	United States	232	24.5%
3	Germany	70	7.4%
4	Switzerland	51	5.4%
5	Japan	44	4.7%
6	India	21	2.2%
7	United Kingdom	21	2.2%
8	Netherlands	18	1.9%
9	Iran, Islamic Republic of	17	1.8%
10	Korea, Republic of	12	1.3%
11	Hong Kong	12	1.3%
12	France	9	1%
13	Portugal	9	1%
14	Taiwan	7	0.7%
15	Australia	7	0.7%
16	Ireland	7	0.7%
17	Pakistan	7	0.7%
18	Italy	7	0.7%
19	Belgium	6	0.6%
20	Singapore	6	0.6%
21	Sweden	6	0.6%
22	Greece	5	0.5%
23	Peru	5	0.5%
24	Austria	4	0.4%
25	Thailand	4	0.4%
26	Turkey	3	0.3%
27	Spain	3	0.3%
28	Romania	3	0.3%
29	Russia	3	0.3%
30	Ghana	3	0.3%
31	Cyprus	3	0.3%
32	Czech Republic	2	0.2%
33	Ethiopia	2	0.2%
34	Argentina	2	0.2%
35	Canada	2	0.2%
36	Nigeria	2	0.2%
37	Nepal	2	0.2%
38	Mexico	2	0.2%
39	Lithuania	2	0.2%
40	Kazakhstan	2	0.2%
41	South Africa	2	0.2%
42	Serbia	1	0.1%
43	Ukraine	1	0.1%
44	Viet Nam	1	0.1%
45	Malaysia	1	0.1%
46	Israel	1	0.1%
47	Iraq	1	0.1%
48	Mongolia	1	0.1%
49	Poland	1	0.1%
50	Colombia	1	0.1%
51	Bulgaria	1	0.1%
52	Egypt	1	0.1%