
| 2024 | 2.94 | 0.84 | 113.8 | 349.7% |
| 2023 | 3.04 | 0.76 | 104.3 | 398.4% |
| 2022 | 2.71 | 0.77 | 106.6 | 352.3% |
| 2021 | 3.1 | 0.75 | 105.4 | 412.2% |
| 2020 | 1.28 | 0.62 | 87.51 | 206.9% |
| 2019 | 3.05 | 0.78 | 112.1 | 391.8% |
| 2018 | 2.82 | 0.91 | 132.9 | 309.8% |
| 2017 | 2.6 | 0.95 | 140.5 | 274.2% |
| 2016 | 1.36 | 0.6 | 90.74 | 226.3% |
| 2015 | 1.45 | 0.61 | 94.13 | 236.6% |
| 2014 | 1.65 | 0.77 | 120.2 | 213.8% |
| 2013 | 2.64 | 0.79 | 125.5 | 333.8% |
| 2012 | 3.66 | 0.74 | 119 | 498.1% |
| 2011 | 1.37 | 0.59 | 93.07 | 232.5% |
| 2010 | 4.45 | 0.9 | 138.4 | 494.6% |
| 2009 | 4.4 | 0.85 | 134 | 516.3% |
| 2008 | 4.62 | 0.75 | 119.5 | 620% |
| 2007 | 4.38 | 0.72 | 117.6 | 610.8% |
| 2006 | 4.3 | 0.72 | 120.8 | 594.6% |
| 2005 | 4.02 | 0.79 | 134.5 | 510.6% |
| 2004 | 3.68 | 0.76 | 132.8 | 483.1% |
| 2003 | 3.31 | 0.74 | 132.4 | 445% |
| 2002 | 3.1 | 0.76 | 137.1 | 410.5% |
| 2001 | 3.2 | 0.73 | 135.5 | 436.9% |
| 2000 | 3.3 | 0.73 | 137 | 454.2% |
| 1999 | 3.19 | 0.54 | 102.6 | 596.7% |
| 1998 | 3.44 | 0.59 | 115.3 | 579.5% |
| 1997 | 3.34 | 0.62 | 121.6 | 541.5% |
| 1996 | 3.26 | 0.58 | 117.3 | 557.3% |
| 1995 | 3.24 | 0.55 | 112.8 | 585.1% |
| 1994 | 3.16 | 0.53 | 109.9 | 595.8% |
| 1993 | 3.17 | 0.51 | 108.3 | 618.4% |
| 1992 | 3.42 | 0.49 | 106.7 | 691.3% |
| 1991 | 3.47 | 0.53 | 116.7 | 653.9% |
| 1990 | 3.11 | 0.51 | 114.3 | 612.9% |
| 1989 | 2.58 | 0.48 | 110.7 | 536.4% |
| 1988 | 2.51 | 0.46 | 109.6 | 540.3% |
| 1987 | 2.37 | 0.45 | 109.9 | 523% |
| 1986 | 2.44 | 0.44 | 109.9 | 552.9% |
| 1985 | 2.44 | 0.42 | 108.2 | 578.8% |
| 1984 | 2.51 | 0.38 | 101.7 | 653.3% |
| 1983 | 0.15 | 0.38 | 103 | 38.3% |
| 1982 | 0.13 | 0.36 | 95.55 | 35.3% |
| 1981 | 0.12 | 0.36 | 99.35 | 32% |
| 1980 | 0.19 | 0.4 | 117.3 | 46.9% |