Year All greenhouse gases including aerosols 50 % probability of below 2 °C 50 % probability of below 1.5 °C All greenhouse gases*
1970 322.407 530 430 291.676
1975 332.361 530 430 302.929
1978 340.274 530 430 311.531
1979 343.48 530 430 314.935
1980 346.528 530 430 318.203
1981 348.993 530 430 320.944
1982 351.621 530 430 323.844
1983 354.172 530 430 326.679
1984 356.803 530 430 329.597
1985 359.284 530 430 332.383
1986 361.952 530 430 335.351
1987 364.583 530 430 338.292
1988 368.518 530 430 342.453
1989 371.388 530 430 345.635
1990 373.393 530 430 348.019
1991 376.378 530 430 350.706
1992 378.021 530 430 352.143
1993 379.519 530 430 353.443
1994 382.057 530 430 355.712
1995 385.01 530 430 358.365
1996 387.677 530 430 360.75
1997 389.591 530 430 362.434
1998 393.123 530 430 365.622
1999 396.301 530 430 368.478
2000 398.227 530 430 370.169
2001 399.895 530 430 372.23
2002 402.249 530 430 374.934
2003 405.248 530 430 378.248
2004 406.965 530 430 380.372
2005 409.583 530 430 383.344
2006 413.025 530 430 385.88
2007 416.08 530 430 388.052
2008 419.74 530 430 390.787
2009 422.438 530 430 392.626
2010 426.126 530 430 395.386
2011 429.507 530 430 397.822
2012 433.016 530 430 400.472
2013 437.339 530 430 403.876
2014 440.862 530 430 406.54
2015 444.536 530 430 409.344