1968   0.0   0.0   0.0   0.2   0.2   6.4  11.8  21.0  19.1   8.9   1.7   0.4
  1969   0.1   0.0   0.0   0.1   0.4   2.7   4.8   5.1   1.3   0.4   0.1   0.0
  1970   0.0   0.0   0.0   0.0   0.0  15.9  13.0  15.0   7.0  10.8   2.0   0.1
  1971   0.0   0.0   0.0   0.0   0.1   0.7   1.8   5.5   8.6  11.6   1.4   0.2
  1972   0.0   0.0   0.0   0.0   0.0   0.0   1.8   8.8   4.2   1.3   0.1   0.0
  1973   0.0   0.0   0.0   0.0   0.0   2.9  16.3  19.3  16.4   5.9   1.4   0.1
  1974   0.0   0.0   0.0   0.0   1.0   8.0  32.7  55.0   7.9   6.0   2.1   0.3
  1975   0.0   0.0   0.0   0.0   0.0   0.8   7.8  10.9   5.7   2.5   0.4   0.0
  1976   0.0   0.0   0.0   0.0   0.0   0.1   0.2   3.3   1.3   0.6   0.3   0.0
  1977   0.0   0.0   0.0   0.0   0.0   0.0   0.1   3.4   0.6   0.7   0.1   0.0
  1978   0.0   0.0   0.0   0.0   0.0   0.2  12.2   2.5   2.9   4.2   0.1   0.0
  1979   0.0   0.0   0.0   0.0   0.0   0.0   0.3   1.5   0.7   0.2   0.0   0.0
  1980   0.0   0.0   0.0   0.0   0.0   0.3   2.9   4.5   3.3   1.9   0.3   0.0
  1981   0.0   0.0   0.0   0.0   0.0   3.0   6.9  21.1   6.0   2.6   1.0   0.3
  1982   0.6   0.1   0.0   0.0   0.0   0.2   1.4   2.1   2.4   1.6   0.1   0.0
  1983   0.0   0.0   0.0   0.0   0.0   1.4   6.9  19.4  30.6   2.1   0.4   0.0
  1984   0.0   0.0   0.0   0.0   0.5   6.0   9.9  15.0  20.0   1.6   1.1   0.0
  1985   0.0   0.0   0.0   0.0   0.0   0.0   1.3   6.2   2.6   0.5   0.1   0.0
  1986   0.0   0.0   0.0   0.0   0.0   0.6   2.3   5.5   2.3   0.9   0.1   0.0
  1987   0.0   0.0   0.0   0.0   0.0   0.0   2.8   4.4   1.1   0.4   0.0   0.0
  1988   0.0   0.0   0.0   0.0   0.0   4.7  11.1   9.8   8.1  10.9   1.6   0.1
  1989   0.0   0.0   0.0   0.0   0.0   0.0   0.6   2.5   3.0   4.0   0.4   0.0
  1990   0.0   0.0   0.0   0.0   0.0   0.3   9.8   8.3   3.2   2.2   0.5   0.0
  1991   0.0   0.0   0.0   0.0   0.0   0.9   7.4  13.9   9.0   2.5   0.9   0.1
  1992   0.0   0.0   0.0   0.0   0.0   1.7   7.3  13.3  16.0   2.4   0.6   0.1