Table:
period

1981 to 2000
2000 to 2008
1981 to 2009

percent

value-added growth (log), annual average
3.22
0.39
2.31

percentage points

contribution

labour input
0.08
0.84
0.32

produced capital input
2.45
4.64
3.16

natural capital input
0.43
0.16
0.34

multifactor productiivty
0.26
-5.25
-1.51

percent

multifactor productivity growth (log), annual average before adding natural capital
-0.04
-6.96
-2.27

Statement: from 1981 to 2009, the log growth of value-added in oil and gas extraction was about 2.3% per year.
Question: from 1981 to 2009,what's the percentage of the log growth of value-added in oil and gas extraction per year?
Answer: [-2.27]