Year,SSB_mt,R_knum,Jan1_B_mt
1980,,,
1981,,7769,
1982,23987,7539,41259
1983,18916,10464,32155
1984,14536,7004,26390
1985,16000,10162,23994
1986,17107,12538,25120
1987,15302,25205,23292
1988,16419,4301,23711
1989,22587,4031,32891
1990,24261,7056,41966
1991,21144,6657,32269
1992,13182,9624,22294
1993,10797,3515,21043
1994,12243,3686,19803
1995,14996,3504,20360
1996,13244,5906,17995
1997,11128,5096,15867
1998,11475,7785,17679
1999,14149,4404,19759
2000,16049,1030,21802
2001,23694,7042,29026
2002,25369,3063,29876
2003,21729,22048,27928
2004,20549,,28904