interest expense related to capital lease obligations was $ 1.7 million during both the years ended december 31 , 2013 and 2012 , and $ 1.5 million during the year ended december 31 , 2011 .
purchase commitments in the table below , we set forth our enforceable and legally binding purchase obligations as of december 31 , 2013 .
some of the amounts included in the table are based on management 2019s estimates and assumptions about these obligations , including their duration , the possibility of renewal , anticipated actions by third parties , and other factors .
because these estimates and assumptions are necessarily subjective , our actual payments may vary from those reflected in the table .
purchase orders made in the ordinary course of business are excluded from the table below .
any amounts for which we are liable under purchase orders are reflected on the consolidated balance sheets as accounts payable and accrued liabilities .
these obligations relate to various purchase agreements for items such as minimum amounts of fiber and energy purchases over periods ranging from one to 15 years .
total purchase commitments are as follows ( dollars in thousands ) : .

2014
$120,971
2015
54,757
2016
14,840
2017
3,017
2018
2,545
Thereafter
11,536
Total
$207,666

the company purchased a total of $ 61.7 million , $ 27.7 million , and $ 28.5 million during the years ended december 31 , 2013 , 2012 , and 2011 , respectively , under these purchase agreements .
the increase in purchase commitments in 2014 , compared with 2013 , relates to the acquisition of boise in fourth quarter 2013 .
environmental liabilities the potential costs for various environmental matters are uncertain due to such factors as the unknown magnitude of possible cleanup costs , the complexity and evolving nature of governmental laws and regulations and their interpretations , and the timing , varying costs and effectiveness of alternative cleanup technologies .
from 1994 through 2013 , remediation costs at the company 2019s mills and corrugated plants totaled approximately $ 3.2 million .
at december 31 , 2013 , the company had $ 34.1 million of environmental-related reserves recorded on its consolidated balance sheet .
of the $ 34.1 million , approximately $ 26.5 million related to environmental- related asset retirement obligations discussed in note 14 , asset retirement obligations , and $ 7.6 million related to our estimate of other environmental contingencies .
the company recorded $ 7.8 million in 201caccrued liabilities 201d and $ 26.3 million in 201cother long-term liabilities 201d on the consolidated balance sheet .
liabilities recorded for environmental contingencies are estimates of the probable costs based upon available information and assumptions .
because of these uncertainties , pca 2019s estimates may change .
as of the date of this filing , the company believes that it is not reasonably possible that future environmental expenditures for remediation costs and asset retirement obligations above the $ 34.1 million accrued as of december 31 , 2013 , will have a material impact on its financial condition , results of operations , or cash flows .
guarantees and indemnifications we provide guarantees , indemnifications , and other assurances to third parties in the normal course of our business .
these include tort indemnifications , environmental assurances , and representations and warranties in commercial agreements .
at december 31 , 2013 , we are not aware of any material liabilities arising from any guarantee , indemnification , or financial assurance we have provided .
if we determined such a liability was probable and subject to reasonable determination , we would accrue for it at that time. .

Question: Analyse this data from a financial earnings document. what percentage of total purchase commitments are due in 2016?
Choices:
0.07146
1
-0.07146
13.99367
5.83104
Correct choice index: 0