ROK | I KW | II KW | III KW | IV KW | średnia roczna | zmiana | |
2014 | 4129 | 4141 | 3880 | 3984 | 4033,5 | 0,20% | 5,74% |
2013 | 4 019 | 3 879 | 3 975 | 4228 | 4025,25 | 0,73% | |
2012 | 4 130 | 4 103 | 3 915 | 3 837 | 3996,25 | 3,58% | |
2011 | 3 797 | 3 819 | 3 988 | 3 829 | 3858,25 | -11,51% | |
2010 | 4 372 | 4 433 | 4 657 | 3 979 | 4360,25 | 12,05% | |
2009 | 3 895 | 3 924 | 3 783 | 3 964 | 3891,5 | 17,35% | |
2008 | 2 970 | 3 186 | 3 478 | 3 631 | 3316,25 | 17,76% | |
2007 | 2 683 | 2 650 | 3 041 | 2 890 | 2816 |