
| 2024 | 0.13 | 0.19 | 26.11 | 69% |
| 2023 | 0.11 | 0.19 | 27.36 | 57.1% |
| 2022 | 0.11 | 0.18 | 25.9 | 60.3% |
| 2021 | 0.09 | 0.15 | 21.76 | 60.3% |
| 2020 | 0.1 | 0.14 | 21.52 | 70.6% |
| 2019 | 0.1 | 0.16 | 24.17 | 62.4% |
| 2018 | 0.1 | 0.18 | 27.93 | 53.6% |
| 2017 | 0.09 | 0.16 | 25.6 | 53.6% |
| 2016 | 0.07 | 0.16 | 26.58 | 43.5% |
| 2015 | 0.07 | 0.16 | 26.5 | 43.6% |
| 2014 | 0.08 | 0.17 | 28.69 | 45.2% |
| 2013 | 0.07 | 0.17 | 28.56 | 42.2% |
| 2012 | 0.07 | 0.18 | 30.8 | 39.1% |
| 2011 | 0.06 | 0.14 | 25.49 | 44.4% |
| 2010 | 0.05 | 0.13 | 24.22 | 37% |
| 2009 | 0.05 | 0.15 | 27.34 | 31.7% |
| 2008 | 0.05 | 0.15 | 27.18 | 31% |
| 2007 | 0.05 | 0.14 | 25.99 | 38.1% |
| 2006 | 0.05 | 0.12 | 22.69 | 42.6% |
| 2005 | 0.05 | 0.11 | 21.55 | 48% |
| 2004 | 0.06 | 0.12 | 22.39 | 50.7% |
| 2003 | 0.06 | 0.11 | 22.21 | 49% |
| 2002 | 0.05 | 0.12 | 23.69 | 39% |
| 2001 | 0.05 | 0.14 | 27.87 | 37.7% |
| 2000 | 0.06 | 0.15 | 29.19 | 38.6% |
| 1999 | 0.05 | 0.15 | 31.06 | 33.2% |
| 1998 | 0.05 | 0.15 | 31.13 | 30% |
| 1997 | 0.05 | 0.15 | 29.94 | 34.1% |
| 1996 | 0.05 | 0.15 | 30.94 | 35.8% |
| 1995 | 0.05 | 0.11 | 23.42 | 45.7% |
| 1994 | 0.06 | 0.14 | 29.82 | 41.8% |
| 1993 | 0.06 | 0.19 | 40.04 | 34% |
| 1992 | 0.08 | 0.22 | 47.52 | 34.4% |