Carbon dioxide: Annual increases in the air

ppm/yr	year	Annual increases in atmospheric carbon dioxide
1.73	1980		1980-2013
1.43	1981
0.96	1982
2.13	1983
1.36	1984
1.25	1985
1.48	1986
2.29	1987
2.13	1988
1.32	1989
1.19	1990
0.99	1991
0.48	1992
1.40	1993
1.91	1994
1.99	1995
1.25	1996
1.91	1997
2.93	1998
.93	1999
1.62	2000
1.58	2001
2.53	2002
2.29	2003
1.56	2004
2.52	2005
1.76	2006
2.22	2007
1.60	2008
1.87	2009
2.44	2010
1.84	2011		394.16 ppm May, 2011.
2.65	2012
	2013		399.46 ppm May, 2013.
57.54	1.796		twenty five year average	1.7964	ppm.