Pertamina
President directors
Table:
No

Name

Begin

End

1

Soegijanto

1996

1998

2

Martiono Hadianto

1998

2000

3

Baihaki Hakim

2000

2003

4

Ariffi Nawawi

2003

2004

5

Widya Purnama

2004

2006

6

Ari Hernanto Soemarno

2006

2009

7

Karen Agustiawan

2009

2014

8

Dwi Soetjipto

2014

2017

9

Elia Massa Manik

2017

2018

10

Nicke Widyawati

2018

present

Examining the following table concerning 'Pertamina' titled 'President directors', produce a single-sentence summary focused on the highlighted cells and return it as JSON: {"answer": "YOUR ANSWER"}.