_id Category 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 1 Solid waste disposal 2.418 2.421 2.445 2.486 2.535 2.493 2.36 2.433 2.41 2.377 2.352 2.377 2.263 2.051 1.985 1.87 1.801 2.08 2.214 2.381 2.398 2.524 2.022 2.18 2.048 2.143 2.128 1.983 1.81 2 Biological treatment of solid waste 0.004 0.005 0.007 0.008 0.01 0.012 0.013 0.015 0.016 0.018 0.02 0.021 0.023 0.025 0.027 0.029 0.031 0.033 0.036 0.038 0.043 0.05 0.051 0.052 0.053 0.053 0.055 0.055 0.056 3 Incineration and open burning of waste 0.028 0.028 0.028 0.028 0.028 0.028 0.004 0.004 0.004 0.004 0.004 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.006 4 Waste water treatment and discharge 0.874 0.866 0.837 0.808 0.78 0.739 0.695 0.658 0.624 0.61 0.63 0.668 0.66 0.637 0.649 0.654 0.662 0.677 0.68 0.741 0.711 0.661 0.714 0.779 0.755 0.677 0.708 0.69 0.708 5 Queensland 3.324 3.32 3.317 3.331 3.353 3.272 3.072 3.11 3.055 3.01 3.007 3.071 2.951 2.718 2.665 2.559 2.5 2.795 2.935 3.165 3.157 3.241 2.793 3.017 2.861 2.88 2.897 2.735 2.581 6 New South Wales All 4.275 7 Victoria All 2.586 8 Western Australia All 1.638 9 South Australia All 0.963 10 Northern Territory All 0.167 11 Tasmania All 0.354 12 Australian Capital Territory All 0.123