1989   0.1   0.0   0.1   0.1
 1990   0.2   0.0   0.0   0.7
 1991   0.0   0.0   0.0   0.0
 1992   0.2   0.7   0.0   0.5
 1993   4.9   7.3   4.1   5.1
 1994  13.1   0.0   6.8  39.5
 1995   0.4   0.0   0.0   1.7