Yýllar             1.DÖNEM                  2.DÖNEM                  3.DÖNEM                  4.DÖNEM

2004              9,30                           8,8                              7,6                              9,1

2003              16,53                         18                              15,7                           14,9

2002              20,8                           19,66                         20,8                           22,7

2001              7,7                              18,5                           19,4                           14,7

2000              -                                  18,3                           15,7                           21,4

1999              8,5                              10,6                           10,5                           11,5

1998              -                                  -                                  -                                  18,8

1997              -                                  -                                  -                                  20

1996              -                                  -                                  -                                  16,6