during the fourth quarter of 2010 , schlumberger issued 20ac1.0 billion 2.75% ( 2.75 % ) guaranteed notes due under this program .
schlumberger entered into agreements to swap these euro notes for us dollars on the date of issue until maturity , effectively making this a us denominated debt on which schlumberger will pay interest in us dollars at a rate of 2.56% ( 2.56 % ) .
during the first quarter of 2009 , schlumberger issued 20ac1.0 billion 4.50% ( 4.50 % ) guaranteed notes due 2014 under this program .
schlumberger entered into agreements to swap these euro notes for us dollars on the date of issue until maturity , effectively making this a us dollar denominated debt on which schlumberger will pay interest in us dollars at a rate of 4.95% ( 4.95 % ) .
0160 on april 17 , 2008 , the schlumberger board of directors approved an $ 8 billion share repurchase program for shares of schlumberger common stock , to be acquired in the open market before december 31 , 2011 .
on july 21 , 2011 , the schlumberger board of directors approved an extension of this repurchase program to december 31 , 2013 .
schlumberger had repurchased $ 7.12 billion of shares under this program as of december 31 , 2012 .
the following table summarizes the activity under this share repurchase program during 2012 , 2011 and 2010 : ( stated in thousands except per share amounts ) total cost of shares purchased total number of shares purchased average price paid per share .

Total cost of shares purchased
Total number of shares purchased
Average price paid per share
2012
$971,883
14,087.8
$68.99
2011
$2,997,688
36,940.4
$81.15
2010
$1,716,675
26,624.8
$64.48

0160 cash flow provided by operations was $ 6.8 billion in 2012 , $ 6.1 billion in 2011 and $ 5.5 billion in 2010 .
in recent years , schlumberger has actively managed its activity levels in venezuela relative to its accounts receivable balance , and has recently experienced an increased delay in payment from its national oil company customer there .
schlumberger operates in approximately 85 countries .
at december 31 , 2012 , only five of those countries ( including venezuela ) individually accounted for greater than 5% ( 5 % ) of schlumberger 2019s accounts receivable balance of which only one , the united states , represented greater than 10% ( 10 % ) .
0160 dividends paid during 2012 , 2011 and 2010 were $ 1.43 billion , $ 1.30 billion and $ 1.04 billion , respectively .
on january 17 , 2013 , schlumberger announced that its board of directors had approved an increase in the quarterly dividend of 13.6% ( 13.6 % ) , to $ 0.3125 .
on january 19 , 2012 , schlumberger announced that its board of directors had approved an increase in the quarterly dividend of 10% ( 10 % ) , to $ 0.275 .
on january 21 , 2011 , schlumberger announced that its board of directors had approved an increase in the quarterly dividend of 19% ( 19 % ) , to $ 0.25 .
0160 capital expenditures were $ 4.7 billion in 2012 , $ 4.0 billion in 2011 and $ 2.9 billion in 2010 .
capital expenditures are expected to approach $ 3.9 billion for the full year 2013 .
0160 during 2012 , 2011 and 2010 schlumberger made contributions of $ 673 million , $ 601 million and $ 868 million , respectively , to its postretirement benefit plans .
the us pension plans were 82% ( 82 % ) funded at december 31 , 2012 based on the projected benefit obligation .
this compares to 87% ( 87 % ) funded at december 31 , 2011 .
schlumberger 2019s international defined benefit pension plans are a combined 88% ( 88 % ) funded at december 31 , 2012 based on the projected benefit obligation .
this compares to 88% ( 88 % ) funded at december 31 , 2011 .
schlumberger currently anticipates contributing approximately $ 650 million to its postretirement benefit plans in 2013 , subject to market and business conditions .
0160 there were $ 321 million outstanding series b debentures at december 31 , 2009 .
during 2010 , the remaining $ 320 million of the 2.125% ( 2.125 % ) series b convertible debentures due june 1 , 2023 were converted by holders into 8.0 million shares of schlumberger common stock and the remaining $ 1 million of outstanding series b debentures were redeemed for cash. .

Question: Analyse this data from a financial earnings document. by how much did the average price per share increase from 2010 to 2011?
Choices:
-0.25853
81.15
0.25853
-0.70533
16.67
Correct choice index: 2