respectively .
the federal tax attribute carryovers will expire after 16 to 17 years , the state after five to 10 years , and the majority of international after six years with the remaining international expiring in one year or with an indefinite carryover period .
the tax attributes being carried over arise as certain jurisdictions may have tax losses or may have inabilities to utilize certain losses without the same type of taxable income .
as of december 31 , 2013 , the company has provided $ 23 million of valuation allowance against certain of these deferred tax assets based on management's determination that it is more-likely-than-not that the tax benefits related to these assets will not be realized .
the valuation allowance was reduced in 2013 mainly due to the expiration of the tax attributes .
during 2013 , the company contributed $ 476 million to its u.s .
and international pension plans and $ 6 million to its postretirement plans .
during 2012 , the company contributed $ 1.079 billion to its u.s .
and international pension plans and $ 67 million to its postretirement plans .
during 2011 , the company contributed $ 517 million to its u.s .
and international pension plans and $ 65 million to its postretirement plans .
the current income tax provision includes a benefit for the pension contributions ; the deferred tax provision includes a cost for the related temporary difference .
reconciliation of effective income tax rate .

2013
2012
2011
Statutory U.S. tax rate
35.0%
35.0%
35.0%
State income taxes - net of federal benefit
0.9
0.9
0.7
International income taxes - net
(6.3)
(4.2)
(4.6)
U.S. research and development credit
(0.7)
—
(0.5)
Reserves for tax contingencies
1.2
(1.9)
(1.2)
Domestic Manufacturer’s deduction
(1.6)
(1.2)
(1.5)
All other - net
(0.4)
0.4
(0.1)
Effective worldwide tax rate
28.1%
29.0%
27.8%

the effective tax rate for 2013 was 28.1 percent , compared to 29.0 percent in 2012 , a decrease of 0.9 percentage points , impacted by many factors .
factors that decreased the company 2019s effective tax rate included international taxes as a result of changes to the geographic mix of income before taxes , the reinstatement of the u.s .
research and development credit in 2013 , an increase in the domestic manufacturer 2019s deduction benefit , the restoration of tax basis on certain assets for which depreciation deductions were previously limited , and other items .
combined , these factors decreased the company 2019s effective tax rate by 4.0 percentage points .
this benefit was partially offset by factors that increased the effective tax rate by 3.1 percentage points , which largely related to adjustments to 3m 2019s income tax reserves for 2013 when compared to 2012 .
the effective tax rate for 2012 was 29.0 percent , compared to 27.8 percent in 2011 , an increase of 1.2 percentage points , impacted by many factors .
the primary factors that increased the company 2019s effective tax rate year-on-year include international taxes , specifically with respect to the corporate reorganization of a wholly owned international subsidiary ( which benefited 2011 ) , state income taxes , lower domestic manufacturer 2019s deduction , and the lapse of the u.s .
research and development credit .
these and other factors , when compared to 2011 , increased the 2012 effective tax rate by 2.1 percentage points .
factors that decreased the company 2019s effective tax rate year-on-year include international taxes as a result of changes to the geographic mix of income before taxes and adjustments to its income tax reserves .
these factors , when compared to 2011 , decreased the effective tax rate 0.9 percentage points .
the company files income tax returns in the u.s .
federal jurisdiction , and various states and foreign jurisdictions .
with few exceptions , the company is no longer subject to u.s .
federal , state and local , or non-u.s .
income tax examinations by tax authorities for years before 2004 .
the irs completed its field examination of the company 2019s u.s .
federal income tax returns for the years 2005 through 2007 in the fourth quarter of 2009 .
the company protested certain irs positions within these tax years and entered into the administrative appeals process with the irs during the first quarter of 2010 .
during the first quarter of 2010 , the irs completed its field examination of the company 2019s u.s .
federal income tax return for the 2008 year .
the company protested certain irs positions for 2008 and entered into the administrative appeals process with the irs during the second quarter of 2010 .
during the first quarter of 2011 , the irs completed its field examination of the company 2019s u.s .
federal income tax return for the 2009 year .
the company protested certain irs positions for 2009 and entered into the administrative appeals process with the irs during the second quarter of 2011 .
during the first quarter of 2012 , the irs completed its field examination of the company 2019s u.s .
federal income tax return for the 2010 year .
the company protested certain irs positions for 2010 and entered into the administrative appeals process with the irs during the .

Question: Analyse this data from a financial earnings document. what was the ratio of the company contribution in 2011 to the amount in 2013 to the us pension contributions
Choices:
22.47826
738.57143
993
0.00109
1.08613
Correct choice index: 4