PH krav - kilogramů bílkovin
| Rok | Počet | PH | SD |
| 1992 | 56051 | -12.16 | 10.45 |
| 1993 | 64479 | -11.10 | 11.28 |
| 1994 | 65052 | -12.06 | 9.64 |
| 1995 | 66684 | -11.66 | 10.31 |
| 1996 | 67285 | -11.32 | 11.21 |
| 1997 | 70986 | -9.94 | 11.73 |
| 1998 | 72702 | -8.29 | 12.39 |
| 1999 | 74316 | -6.33 | 12.83 |
| 2000 | 72894 | -5.40 | 12.75 |
| 2001 | 65917 | -4.05 | 13.14 |
| 2002 | 62366 | -2.80 | 13.24 |
| 2003 | 63794 | -2.30 | 13.49 |
| 2004 | 62773 | -2.18 | 13.65 |
| 2005 | 61737 | -1.84 | 13.76 |
| 2006 | 61705 | -1.20 | 13.97 |
| 2007 | 59502 | .25 | 13.95 |
| 2008 | 58791 | .38 | 14.29 |
| 2009 | 60991 | 1.15 | 14.27 |
| 2010 | 58830 | 1.93 | 14.18 |
| 2011 | 60228 | 2.30 | 14.25 |
| 2012 | 61850 | 3.33 | 13.99 |
| 2013 | 61973 | 3.76 | 13.83 |
| 2014 | 64353 | 4.58 | 13.84 |
| 2015 | 64029 | 6.35 | 13.96 |
| 2016 | 65626 | 7.26 | 13.78 |
| 2017 | 65996 | 9.02 | 14.08 |
| 2018 | 66909 | 10.58 | 13.58 |
| 2019 | 37336 | 12.71 | 12.23 |
| 2020 | 1 | 25.90 | .00 |