Year,Comm_land_mt 1960,40.9000 1961,30.9000 1962,176.0000 1963,254.4000 1964,422.5000 1965,955.0000 1966,1766.4000 1967,3171.1000 1968,6610.0000 1969,12823.9000 1970,10669.3000 1971,11129.3000 1972,11094.9000 1973,9404.8000 1974,7944.7000 1975,5286.7000 1976,1022.3000 1977,387.2000 1978,0.0000 1979,486.5000 1980,339.1000 1981,1071.2000 1982,1530.2000 1983,1397.1000 1984,2950.7000 1985,4130.9000 1986,4635.0000 1987,5253.2000 1988,3031.3000 1989,3315.4000 1990,4661.6000 1991,3571.4000 1992,3443.2000 1993,2142.4000 1994,2914.8000 1995,6466.4000 1996,9166.1000 1997,7079.1000 1998,4174.4000 1999,1816.1000 2000,2389.5000 2001,1329.0563 2002,423.7264 2003,1210.9631 2004,1948.7288 2005,2553.1554 2006,1876.6456