น้ำมันพราย

7.827

/

2008

8.455

/

2014

7.494

/

2018

7.26

/

2015

7.59

/

2009

8.147

/

1998

7.93

/

2016

7.446

/

2014

7.316

/

2016

8.711

/

1994

7.901

/

2001

6.7

/

2017

7.618

/

2017

7.534

/

2015

8.183

/

2012

8.686

/

1972

8.212

/

1980

7.341

/

2017

7.615

/

2016

7.499

/

2018