Environmental Accounts: Other Environmental Accounts Forest balance Defoliation by type of trees, year and percentage of defoliation. Units: ? Defoliation % > 25 2000 1999 1998 1997 1996 1995 Total 13.88 12.90 13.60 13.60 19.43 23.47 Conifers 12.07 9.80 12.90 11.50 18.15 18.13 Leafy trees 15.75 16.10 14.40 15.80 20.69 28.66 Notes: Source: National Statistics Institute