pre_text: entergy corporation and subsidiaries notes to financial statements computed on a rolling 12 month basis . as of december 31 , 2008 , entergy louisiana was in compliance with these provisions . as of december 31 , 2008 , entergy louisiana had future minimum lease payments ( reflecting an overall implicit rate of 7.45% ( 7.45 % ) ) in connection with the waterford 3 sale and leaseback transactions , which are recorded as long-term debt , as follows : amount ( in thousands ) .
post_text: grand gulf lease obligations in december 1988 , in two separate but substantially identical transactions , system energy sold and leased back undivided ownership interests in grand gulf for the aggregate sum of $ 500 million . the interests represent approximately 11.5% ( 11.5 % ) of grand gulf . the leases expire in 2015 . under certain circumstances , system entergy may repurchase the leased interests prior to the end of the term of the leases . at the end of the lease terms , system energy has the option to repurchase the leased interests in grand gulf at fair market value or to renew the leases for either fair market value or , under certain conditions , a fixed rate . in may 2004 , system energy caused the grand gulf lessors to refinance the outstanding bonds that they had issued to finance the purchase of their undivided interest in grand gulf . the refinancing is at a lower interest rate , and system energy's lease payments have been reduced to reflect the lower interest costs . system energy is required to report the sale-leaseback as a financing transaction in its financial statements . for financial reporting purposes , system energy expenses the interest portion of the lease obligation and the plant depreciation . however , operating revenues include the recovery of the lease payments because the transactions are accounted for as a sale and leaseback for ratemaking purposes . consistent with a recommendation contained in a ferc audit report , system energy initially recorded as a net regulatory asset the difference between the recovery of the lease payments and the amounts expensed for interest and depreciation and continues to record this difference as a regulatory asset or liability on an ongoing basis , resulting in a zero net balance for the regulatory asset at the end of the lease term . the amount of this net regulatory asset was $ 19.2 million and $ 36.6 million as of december 31 , 2008 and 2007 , respectively. .
table: Amount (In Thousands)
table: 2009 $32,452
table: 2010 35,138
table: 2011 50,421
table: 2012 39,067
table: 2013 26,301
table: Years thereafter 137,858
table: Total 321,237
table: Less: Amount representing interest 73,512
table: Present value of net minimum lease payments $247,725
question: Analyse this data from a financial earnings document. what percent of total lease payments is in 'years thereafter'?