| date,value | |
| 2015-01-01,1.7 | |
| 2015-02-01,1.7 | |
| 2015-03-01,1.7 | |
| 2015-04-01,1.71 | |
| 2015-05-01,1.89 | |
| 2015-06-01,1.68 | |
| 2015-07-01,1.84 | |
| 2015-08-01,1.76 | |
| 2015-09-01,1.78 | |
| 2015-10-01,1.59 | |
| 2015-11-01,1.55 | |
| 2015-12-01,1.63 | |
| 2016-01-01,1.4 | |
| 2016-02-01,1.72 | |
| 2016-03-01,1.61 | |
| 2016-04-01,1.56 | |
| 2016-05-01,1.43 | |
| 2016-06-01,1.45 | |
| 2016-07-01,1.5 | |
| 2016-08-01,1.54 | |
| 2016-09-01,1.36 | |
| 2016-10-01,1.27 | |
| 2016-11-01,1.7 | |
| 2016-12-01,1.62 | |
| 2017-01-01,1.73 | |
| 2017-02-01,1.58 | |
| 2017-03-01,1.73 | |
| 2017-04-01,1.59 | |
| 2017-05-01,1.42 | |
| 2017-06-01,1.52 | |
| 2017-07-01,1.43 | |
| 2017-08-01,1.39 | |
| 2017-09-01,1.2 | |
| 2017-10-01,1.59 | |
| 2017-11-01,1.45 | |
| 2017-12-01,1.48 | |
| 2018-01-01,1.55 | |
| 2018-02-01,1.66 | |
| 2018-03-01,1.69 | |
| 2018-04-01,1.59 | |
| 2018-05-01,1.57 | |
| 2018-06-01,1.55 | |
| 2018-07-01,1.36 | |
| 2018-08-01,1.46 | |
| 2018-09-01,1.25 | |
| 2018-10-01,1.31 | |
| 2018-11-01,1.0 | |
| 2018-12-01,0.99 | |
| 2019-01-01,1.0 | |
| 2019-02-01,1.1 | |
| 2019-03-01,1.2 | |
| 2019-04-01,1.4 | |
| 2019-05-01,1.38 | |
| 2019-06-01,1.11 | |
| 2019-07-01,1.3 | |
| 2019-08-01,1.32 | |
| 2019-09-01,1.5 | |
| 2019-10-01,1.41 | |
| 2019-11-01,1.38 | |
| 2019-12-01,1.48 | |
| 2020-01-01,1.57 | |
| 2020-02-01,1.72 | |