Rank	Countries/Territories	Count	Percent
1	United States	141	28.3%
2	China	101	20.3%
3	Germany	76	15.3%
4	Canada	27	5.4%
5	France	15	3%
6	Iran, Islamic Republic of	13	2.6%
7	Turkey	12	2.4%
8	India	10	2%
9	Egypt	10	2%
10	Indonesia	8	1.6%
11	Italy	7	1.4%
12	Ukraine	7	1.4%
13	Switzerland	7	1.4%
14	Viet Nam	7	1.4%
15	Russia	6	1.2%
16	Cyprus	6	1.2%
17	Netherlands	5	1%
18	Norway	5	1%
19	Singapore	4	0.8%
20	Syrian Arab Republic	3	0.6%
21	United Kingdom	3	0.6%
22	Bulgaria	3	0.6%
23	Kuwait	3	0.6%
24	Moldova, Republic of	3	0.6%
25	Iraq	2	0.4%
26	Bolivia, Plurinational State of	2	0.4%
27	Algeria	2	0.4%
28	Australia	2	0.4%
29	United Arab Emirates	2	0.4%
30	Sweden	2	0.4%
31	Philippines	2	0.4%
32	Bangladesh	1	0.2%
33	Hong Kong	1	0.2%