
| 2024 | 0.13 | 1.03 | 102.4 | 12.8% |
| 2023 | 0.14 | 1.01 | 98.98 | 14% |
| 2022 | 0.16 | 0.98 | 94.32 | 16.3% |
| 2021 | 0.15 | 0.95 | 90.16 | 15.4% |
| 2020 | 0.14 | 0.91 | 85.02 | 15.7% |
| 2019 | 0.21 | 1.07 | 100 | 19.4% |
| 2018 | 0.25 | 1.08 | 100.4 | 23.3% |
| 2017 | 0.25 | 1.09 | 101.2 | 23.1% |
| 2016 | 0.23 | 1.03 | 95.88 | 22.6% |
| 2015 | 0.3 | 1.05 | 96.95 | 28.3% |
| 2014 | 0.32 | 1.05 | 96.57 | 30.3% |
| 2013 | 0.34 | 1.08 | 98.45 | 31.5% |
| 2012 | 0.37 | 1.17 | 105.9 | 31.7% |
| 2011 | 0.34 | 1.27 | 114.4 | 27.1% |
| 2010 | 0.34 | 1.29 | 116 | 26.6% |
| 2009 | 0.37 | 1.37 | 122.9 | 27.4% |
| 2008 | 0.37 | 1.45 | 131 | 25.4% |
| 2007 | 0.37 | 1.48 | 134.2 | 25% |
| 2006 | 0.37 | 1.44 | 130.8 | 25.8% |
| 2005 | 0.39 | 1.41 | 128.2 | 27.7% |
| 2004 | 0.39 | 1.4 | 128.1 | 28.1% |
| 2003 | 0.39 | 1.4 | 128.5 | 27.5% |
| 2002 | 0.39 | 1.34 | 123.3 | 29.1% |
| 2001 | 0.37 | 1.33 | 122.6 | 27.6% |
| 2000 | 0.36 | 1.3 | 120.5 | 27.9% |
| 1999 | 0.34 | 1.22 | 114.1 | 28% |
| 1998 | 0.35 | 1.22 | 114.5 | 28.5% |
| 1997 | 0.34 | 1.15 | 108.4 | 29.8% |
| 1996 | 0.35 | 1.14 | 107.7 | 30.8% |
| 1995 | 0.34 | 1.1 | 104.2 | 30.6% |
| 1994 | 0.33 | 1.07 | 102 | 30.9% |
| 1993 | 0.32 | 1.04 | 99.53 | 31.2% |
| 1992 | 0.33 | 1.03 | 99.56 | 32.1% |
| 1991 | 0.33 | 0.99 | 95.97 | 33.1% |
| 1990 | 0.32 | 0.98 | 95.72 | 32.3% |
| 1989 | 0.32 | 0.94 | 92.35 | 34.1% |
| 1988 | 0.31 | 0.9 | 88.5 | 34.9% |
| 1987 | 0.3 | 0.84 | 83.34 | 35.4% |
| 1986 | 0.27 | 0.78 | 77.35 | 34.8% |
| 1985 | 0.26 | 0.76 | 75.82 | 33.7% |
| 1984 | 0.24 | 0.72 | 72.1 | 33.3% |
| 1983 | 0.17 | 0.71 | 71.25 | 24.1% |
| 1982 | 0.16 | 0.69 | 69.67 | 23.1% |
| 1981 | 0.15 | 0.71 | 72.41 | 21.8% |
| 1980 | 0.13 | 0.71 | 74.03 | 18.5% |