Year Year_since_1979 Extent Mean_temp_anomaly Mean_global_temperature 1979 0 7.051 0.17 14.97 1980 1 7.667 0.26 15.06 1981 2 7.138 0.32 15.12 1982 3 7.302 0.14 14.94 1983 4 7.395 0.31 15.11 1984 5 6.805 0.16 14.96 1985 6 6.698 0.12 14.92 1986 7 7.411 0.18 14.98 1987 8 7.279 0.32 15.12 1988 9 7.369 0.39 15.19 1989 10 7.008 0.27 15.07 1990 11 6.143 0.45 15.25 1991 12 6.473 0.41 15.21 1992 13 7.474 0.22 15.02 1993 14 6.397 0.23 15.03 1994 15 7.138 0.32 15.12 1995 16 6.08 0.45 15.25 1996 17 7.583 0.33 15.13 1997 18 6.686 0.46 15.26 1998 19 6.536 0.61 15.41 1999 20 6.117 0.39 15.19 2000 21 6.246 0.4 15.2 2001 22 6.732 0.54 15.34 2002 23 5.827 0.63 15.43 2003 24 6.116 0.62 15.42 2004 25 5.984 0.54 15.34 2005 26 5.504 0.68 15.48 2006 27 5.862 0.64 15.44 2007 28 4.267 0.67 15.47 2008 29 4.687 0.54 15.34 2009 30 5.262 0.66 15.46 2010 31 4.865 0.72 15.52 2011 32 4.561 0.61 15.41 2012 33 3.566 0.65 15.45 2013 34 5.208 0.68 15.48 2014 35 5.22 0.75 15.55 2015 36 4.616 0.9 15.7 2016 37 4.528 1.02 15.82 2017 38 4.822 0.92 15.72 2018 39 4.785 0.85 15.65 2019 40 4.364 0.98 15.78 2020 41 3.925 NA NA