The estimated annual deposition of sulphate in Eastern Canada for the years 1990-1995, the most recent year for which we have data, is:
1990—4.44 million tonnes 1991—3.81 million tonnes 1992—3.90 million tonnes 1993—3.54 million tonnes 1994—3.43 million tonnes 1995—2.73 million tonnes
Question No. 60—