| 1996 | 20.265 | 20.369 | 19.581 | 21.421 |
| 1997 | 21.401 | 21.756 | 21.178 | 23.335 |
| 1998 | 23.040 | 23.266 | 22.010 | 23.018 |
| 1999 | 22.457 | 22.515 | 21.857 | 24.257 |
| 2000 | 23.759 | 23.830 | 22.949 | 25.075 |
| 2001 | 24.563 | 24.834 | 23.583 | 25.649 |
| 2002 | 24.856 | 25.476 | 24.580 | 26.875 |
| 2003 | 26.182 | 26.787 | 25.709 | 27.918 |
| 2004 | 27.417 | 28.299 | 27.622 | 30.373 |
| 2005 | 29.114 | 29.981 | 29.203 | 32.051 |
| 2006 | 30.847 | 31.880 | 30.845 | 34.057 |
| 2007 | 32.552 | 33.625 | 32.346 | 35.701 |
| 2008 | 34.538 | 35.308 | 33.496 | 35.969 |
| 2009 | 33.758 | 34.311 | 33.255 | 36.429 |
| 2010 | 34.410 | 36.512 | 35.749 | 39.143 |
| 2011 | 37.427 | 38.796 | 37.359 | 41.308 |
| 2012 | 39.680 | 41.317 | 39.836 | 43.591 |
| 2013 | 41.322 | 42.736 | 41.002 | 44.803 |
| 2014 | 42.333 | 43.462 | 41.538 | 45.576 |
| 2015 | 43.386 | 44.352 | 42.481 | 46.412 |
| 2016 | 44.668 | 44.912 | 43.328 | 46.819 |
| 2017 | 44.502 | 45.216 | 44.132 | 48.317 |
| 2018 | 46.516 | 47.701 | 45.193 | 50.025 |
| 2019 | 47.094 | 48.273 | 46.616 | 48.653 |
| 2020 | 46.990 | 41.070 | 42.204 | 48.661 |
| 2021 | 47.233 | 48.597 | 49.036 | 54.304 |
| 2022 | 50.112 | 50.782 | 49.389 | 53.177 |
| 2023 | 49.969 | 50.729 | 50.075 | 53.747 |
| 2024 | 51.630 | 51.348 | 51.073 | 55.879 |
|