Year	thousand metric tons of CO2 equivalent
1970	17.053514824962612
1971	17.11206680612562
1972	17.476682244778
1973	16.912217142582005
1974	15.421442801952399
1975	12.398864945888992
1976	10.796439191817992
1977	12.30845023918199
1978	9.266222550868989
1979	10.497734323978001
1980	-0.3157252767089993
1981	53.589771737099014
1982	75.52615903234502
1983	99.48426989030796
1984	85.61143815136
1985	57.95985843276999
1986	25.058946436881985
1987	-6.013144466877005
1988	10.086927050113967
1989	-1.0366810750960127
1990	-37.06982165575005
1991	-46.59254479408298
1992	52.18123829364799
1993	51.76605808734894
1994	54.01982963085197
1995	69.496868848801
1996	74.079948663712
1997	72.98344588279701
1998	91.01505267620098
1999	77.07591474056198
2000	-2.822054386138973
2001	40.150112748146
2002	23.49937605857798
2003	60.16102862358099
2004	17.48728632926901
2005	-8.512767672538985
2006	6.597842693329028
2007	-109.543998718262
2008	-107.534393548965
2009	600.358605563641
2010	-62.319166958332005
2011	-113.33878421783402
2012	24.137549459934007
2013	-217.419425427914
2014	-176.00128942727997
2015	-189.12256026268005
2016	-218.181866049767