human
morgan stanley notes to consolidated financial statements 2014 (continued) senior debt securities often are denominated in various non-u.s. dollar currencies and may be structured to provide a return that is equity-linked, credit-linked, commodity-linked or linked to some other index (e.g., the consumer price index). senior debt also may be structured to be callable by the company or extendible at the option of holders of the senior debt securities. debt containing provisions that effectively allow the holders to put or extend the notes aggregated $2902 million at december 31, 2015 and $2175 million at december 31, 2014. in addition, in certain circumstances, certain purchasers may be entitled to cause the repurchase of the notes. the aggregated value of notes subject to these arrangements was $650 million at december 31, 2015 and $551 million at december 31, 2014. subordinated debt and junior subordinated debentures generally are issued to meet the capital requirements of the company or its regulated subsidiaries and primarily are u.s. dollar denominated. during 2015, morgan stanley capital trusts vi and vii redeemed all of their issued and outstanding 6.60% (6.60%) capital securities, respectively, and the company concurrently redeemed the related underlying junior subordinated debentures. senior debt 2014structured borrowings. the company 2019s index-linked, equity-linked or credit-linked borrowings include various structured instruments whose payments and redemption values are linked to the performance of a specific index (e.g., standard & poor 2019s 500), a basket of stocks, a specific equity security, a credit exposure or basket of credit exposures. to minimize the exposure resulting from movements in the underlying index, equity, credit or other position, the company has entered into various swap contracts and purchased options that effectively convert the borrowing costs into floating rates based upon libor. the company generally carries the entire structured borrowings at fair value. the swaps and purchased options used to economically hedge the embedded features are derivatives and also are carried at fair value. changes in fair value related to the notes and economic hedges are reported in trading revenues. see note 3 for further information on structured borrowings. subordinated debt and junior subordinated debentures. included in the long-term borrowings are subordinated notes of $10404 million having a contractual weighted average coupon of 4.45% (4.45%) at december 31, 2015 and $8339 million having a contractual weighted average coupon of 4.57% (4.57%) at december 31, 2014. junior subordinated debentures outstanding by the company were $2870 million at december 31, 2015 having a contractual weighted average coupon of 6.22% (6.22%) at december 31, 2015 and $4868 million at december 31, 2014 having a contractual weighted average coupon of 6.37% (6.37%) at december 31, 2014. maturities of the subordinated and junior subordinated notes range from 2022 to 2067, while maturities of certain junior subordinated debentures can be extended to 2052 at the company 2019s option. asset and liability management. in general, securities inventories that are not financed by secured funding sources and the majority of the company 2019s assets are financed with a combination of deposits, short-term funding, floating rate long-term debt or fixed rate long-term debt swapped to a floating rate. fixed assets are generally financed with fixed rate long-term debt. the company uses interest rate swaps to more closely match these borrowings to the duration, holding period and interest rate characteristics of the assets being funded and to manage interest rate risk. these swaps effectively convert certain of the company 2019s fixed rate borrowings into floating rate obligations. in addition, for non-u.s. dollar currency borrowings that are not used to fund assets in the same currency, the company has entered into currency swaps that effectively convert the borrowings into u.s. dollar obligations. the company 2019s use of swaps for asset and liability management affected its effective average borrowing rate. effective average borrowing rate. .
|  | 2015 | 2014 | 2013 |
| --------- | --------- | --------- | --------- |
| Weighted average coupon of long-term borrowings at period-end(1) | 4.0% | 4.2% | 4.4% |
| Effective average borrowing rate for long-term borrowings after swaps at period-end(1) | 2.1% | 2.3% | 2.2% |
.
Please compute the result.
in 2015, what was the change on the effective borrowing rate due to the use of swaps?
assistant
1.9
human
n/a
assistant
1.9