there were no options granted in excess of market value in 2011 , 2010 or 2009 .
shares of common stock available during the next year for the granting of options and other awards under the incentive plans were 33775543 at december 31 , 2011 .
total shares of pnc common stock authorized for future issuance under equity compensation plans totaled 35304422 shares at december 31 , 2011 , which includes shares available for issuance under the incentive plans and the employee stock purchase plan ( espp ) as described below .
during 2011 , we issued 731336 shares from treasury stock in connection with stock option exercise activity .
as with past exercise activity , we currently intend to utilize primarily treasury stock for any future stock option exercises .
awards granted to non-employee directors in 2011 , 2010 and 2009 include 27090 , 29040 , and 39552 deferred stock units , respectively , awarded under the outside directors deferred stock unit plan .
a deferred stock unit is a phantom share of our common stock , which requires liability accounting treatment until such awards are paid to the participants as cash .
as there are no vesting or service requirements on these awards , total compensation expense is recognized in full on awarded deferred stock units on the date of grant .
incentive/performance unit share awards and restricted stock/unit awards the fair value of nonvested incentive/performance unit share awards and restricted stock/unit awards is initially determined based on prices not less than the market value of our common stock price on the date of grant .
the value of certain incentive/ performance unit share awards is subsequently remeasured based on the achievement of one or more financial and other performance goals generally over a three-year period .
the personnel and compensation committee of the board of directors approves the final award payout with respect to incentive/performance unit share awards .
restricted stock/unit awards have various vesting periods generally ranging from 36 months to 60 months .
beginning in 2011 , we incorporated two changes to certain awards under our existing long-term incentive compensation programs .
first , for certain grants of incentive performance units , the future payout amount will be subject to a negative annual adjustment if pnc fails to meet certain risk-related performance metrics .
this adjustment is in addition to the existing financial performance metrics relative to our peers .
these grants have a three-year performance period and are payable in either stock or a combination of stock and cash .
second , performance-based restricted share units ( performance rsus ) were granted in 2011 to certain of our executives in lieu of stock options .
these performance rsus ( which are payable solely in stock ) have a service condition , an internal risk-related performance condition , and an external market condition .
satisfaction of the performance condition is based on four independent one-year performance periods .
the weighted-average grant-date fair value of incentive/ performance unit share awards and restricted stock/unit awards granted in 2011 , 2010 and 2009 was $ 63.25 , $ 54.59 and $ 41.16 per share , respectively .
we recognize compensation expense for such awards ratably over the corresponding vesting and/or performance periods for each type of program .
nonvested incentive/performance unit share awards and restricted stock/unit awards 2013 rollforward shares in thousands nonvested incentive/ performance unit shares weighted- average date fair nonvested restricted stock/ shares weighted- average date fair .

Shares in thousands
Nonvested Incentive/ Performance Unit Shares
Weighted- Average Grant Date Fair Value
Nonvested Restricted Stock/ Unit Shares
Weighted- Average Grant Date Fair Value
December 31, 2010
363
$56.40
2,250
$49.95
Granted
623
64.21
1,059
62.68
Vested
(156)
59.54
(706)
51.27
Forfeited
(91)
52.24
December 31, 2011
830
$61.68
2,512
$54.87

in the chart above , the unit shares and related weighted- average grant-date fair value of the incentive/performance awards exclude the effect of dividends on the underlying shares , as those dividends will be paid in cash .
at december 31 , 2011 , there was $ 61 million of unrecognized deferred compensation expense related to nonvested share- based compensation arrangements granted under the incentive plans .
this cost is expected to be recognized as expense over a period of no longer than five years .
the total fair value of incentive/performance unit share and restricted stock/unit awards vested during 2011 , 2010 and 2009 was approximately $ 52 million , $ 39 million and $ 47 million , respectively .
liability awards we grant annually cash-payable restricted share units to certain executives .
the grants were made primarily as part of an annual bonus incentive deferral plan .
while there are time- based and service-related vesting criteria , there are no market or performance criteria associated with these awards .
compensation expense recognized related to these awards was recorded in prior periods as part of annual cash bonus criteria .
as of december 31 , 2011 , there were 753203 of these cash- payable restricted share units outstanding .
174 the pnc financial services group , inc .
2013 form 10-k .

Question: Analyse this data from a financial earnings document. what was the percentage change in the total fair value of incentive/performance unit share and restricted stock/unit awards from 2010 to 2011,
Choices:
130
0.31379
2.33333
0.42857
91
Correct choice index: 2