mandatorily redeemable securities of subsidiary trusts total mandatorily redeemable securities of subsidiary trusts ( trust preferred securities ) , which qualify as tier 1 capital , were $ 23.899 billion at december 31 , 2008 , as compared to $ 23.594 billion at december 31 , 2007 .
in 2008 , citigroup did not issue any new enhanced trust preferred securities .
the frb issued a final rule , with an effective date of april 11 , 2005 , which retains trust preferred securities in tier 1 capital of bank holding companies , but with stricter quantitative limits and clearer qualitative standards .
under the rule , after a five-year transition period , the aggregate amount of trust preferred securities and certain other restricted core capital elements included in tier 1 capital of internationally active banking organizations , such as citigroup , would be limited to 15% ( 15 % ) of total core capital elements , net of goodwill , less any associated deferred tax liability .
the amount of trust preferred securities and certain other elements in excess of the limit could be included in tier 2 capital , subject to restrictions .
at december 31 , 2008 , citigroup had approximately 11.8% ( 11.8 % ) against the limit .
the company expects to be within restricted core capital limits prior to the implementation date of march 31 , 2009 .
the frb permits additional securities , such as the equity units sold to adia , to be included in tier 1 capital up to 25% ( 25 % ) ( including the restricted core capital elements in the 15% ( 15 % ) limit ) of total core capital elements , net of goodwill less any associated deferred tax liability .
at december 31 , 2008 , citigroup had approximately 16.1% ( 16.1 % ) against the limit .
the frb granted interim capital relief for the impact of adopting sfas 158 at december 31 , 2008 and december 31 , 2007 .
the frb and the ffiec may propose amendments to , and issue interpretations of , risk-based capital guidelines and reporting instructions .
these may affect reported capital ratios and net risk-weighted assets .
capital resources of citigroup 2019s depository institutions citigroup 2019s subsidiary depository institutions in the united states are subject to risk-based capital guidelines issued by their respective primary federal bank regulatory agencies , which are similar to the frb 2019s guidelines .
to be 201cwell capitalized 201d under federal bank regulatory agency definitions , citigroup 2019s depository institutions must have a tier 1 capital ratio of at least 6% ( 6 % ) , a total capital ( tier 1 + tier 2 capital ) ratio of at least 10% ( 10 % ) and a leverage ratio of at least 5% ( 5 % ) , and not be subject to a regulatory directive to meet and maintain higher capital levels .
at december 31 , 2008 , all of citigroup 2019s subsidiary depository institutions were 201cwell capitalized 201d under the federal regulatory agencies 2019 definitions , including citigroup 2019s primary depository institution , citibank , n.a. , as noted in the following table : citibank , n.a .
components of capital and ratios under regulatory guidelines in billions of dollars at year end 2008 2007 .

<i>In billions of dollars at year end</i>
2008
2007
Tier 1 Capital
$71.0
$82.0
Total Capital (Tier 1 and Tier 2)
108.4
121.6
Tier 1 Capital Ratio
9.94%
8.98%
Total Capital Ratio (Tier 1 and Tier 2)
15.18
13.33
Leverage Ratio<sup>(1</sup><sup>)</sup>
5.82
6.65

leverage ratio ( 1 ) 5.82 6.65 ( 1 ) tier 1 capital divided by adjusted average assets .
citibank , n.a .
had a net loss for 2008 amounting to $ 6.2 billion .
during 2008 , citibank , n.a .
received contributions from its parent company of $ 6.1 billion .
citibank , n.a .
did not issue any additional subordinated notes in 2008 .
total subordinated notes issued to citicorp holdings inc .
that were outstanding at december 31 , 2008 and december 31 , 2007 and included in citibank , n.a . 2019s tier 2 capital , amounted to $ 28.2 billion .
citibank , n.a .
received an additional $ 14.3 billion in capital contribution from its parent company in january 2009 .
the impact of this contribution is not reflected in the table above .
the substantial events in 2008 impacting the capital of citigroup , and the potential future events discussed on page 94 under 201ccitigroup regulatory capital ratios , 201d also affected , or could affect , citibank , n.a. .

Question: Analyse this data from a financial earnings document. what was the change in billions in total capital ( tier 1 and tier 2 ) from 2007 to 2008?
Choices:
0
37.4
107.4
-13.2
13.2
Correct choice index: 3