排名	国家/地区	数量	占比
1	China	298	58.2%
2	United States	101	19.7%
3	Germany	22	4.3%
4	Japan	22	4.3%
5	Canada	16	3.1%
6	Singapore	15	2.9%
7	Netherlands	8	1.6%
8	Hong Kong	6	1.2%
9	Romania	6	1.2%
10	South Africa	3	0.6%
11	Norway	2	0.4%
12	Korea, Republic of	2	0.4%
13	Argentina	2	0.4%
14	Ukraine	2	0.4%
15	United Kingdom	2	0.4%
16	Bangladesh	1	0.2%
17	Kazakhstan	1	0.2%
18	Ireland	1	0.2%
19	South Sudan	1	0.2%
20	Taiwan	1	0.2%