| $1.2111 | 4.8050% | 22 August 2018 to 21 November 2018 | 22 November 2018 |
| $1.2087 | 4.7953% | 22 May 2018 to 21 August 2018 | 22 August 2018 |
| $1.1253 | 4.6150% | 22 February 2018 to 21 May 2018 | 22 May 2018 |
| $1.1532 | 4.5750% | 22 November 2017 to 21 February 2017 | 22 February 2018 |
| $1.1481 | 4.5550% | 22 August 2017 to 21 November 2017 | 22 November 2017 |
| $1.1557 | 4.5850% | 22 May 2017 to 21 August 2017 | 22 August 2017 |
| $1.1290 | 4.6300% | 22 February 2017 to 21 May 2017 | 22 May 2017 |
| $1.1607 | 4.6050% | 22 November 2016 to 21 February 2017 | 22 February 2017 |
| $1.1532 | 4.575% | 22 August 2016 to 21 November 2016 | 22 November 2016 |
| $1.2079 | 4.845% | 22 May 2016 to 21 August 2016 | 22 August 2016 |
| $1.2782 | 5.1267% | 22 February 2016 to 22 May 2016 | 23 May 2016 |
| $1.2715 | 5.100% | 23 November 2015 to 21 February 2016 | 22 February 2016 |
| $1.2378 | 4.9650% | 24 August 2015 to 22 November 2015 | 23 November 2015 |
| $1.2825 | 4.9800% | 22 May 2015 to 23 August 2015 | 24 August 2015 |
| $1.2457 | 5.1667% | 23 February 2015 to 21 May 2015 | 22 May 2015 |
| $1.3899 | 5.5750% | 24 November 2014 to 22 February 2015 | 23 February 2015 |
| $1.3825 | 5.49% | 22 August 2014 to 23 November 2014 | 24 November 2014 |
| $1.4002 | 5.55% | 22 May 2014 to 21 August 2014 | 22 August 2014 |
| $1.3054 | 5.48% | 24 February 2014 to 21 May 2014 | 22 May 2014 |
| $1.3997 | 5.43% | 22 November 2013 to 23 February 2014 | 24 February 2014 |
| $1.3737 | 5.45% | 22 August 2013 to 21 November 2013 | 22 November 2013 |
| $1.4285 | 5.67% | 22 May 2013 to 21 August 2013 | 22 August 2013 |
