Rank

Country

Y2012

(MT)

Y2013

Y2014

Y2015

Y2016

Y2017

World Total

2,465

2,404

2,699

3,036

2,894

2,500

1

USA

-

977

1,843

2,208

1,921

1,489

2

China

1,037

871

856

828

973

1,061

3

Philippines

1,428

557

-

-

-

-

4

Japan

1

-

-

-

-

-