| Year | All greenhouse gases including aerosols | 50 % probability of below 2 °C | 50 % probability of below 1.5 °C |
|---|---|---|---|
| 1970 | 322.41 | 545.0 | 478.0 |
| 1971 | |||
| 1972 | |||
| 1973 | |||
| 1974 | |||
| 1975 | 332.36 | 545.0 | 478.0 |
| 1976 | |||
| 1977 | |||
| 1978 | 340.57 | 545.0 | 478.0 |
| 1979 | 343.78 | 545.0 | 478.0 |
| 1980 | 346.84 | 545.0 | 478.0 |
| 1981 | 349.31 | 545.0 | 478.0 |
| 1982 | 351.94 | 545.0 | 478.0 |
| 1983 | 354.5 | 545.0 | 478.0 |
| 1984 | 357.13 | 545.0 | 478.0 |
| 1985 | 359.61 | 545.0 | 478.0 |
| 1986 | 362.28 | 545.0 | 478.0 |
| 1987 | 364.92 | 545.0 | 478.0 |
| 1988 | 368.86 | 545.0 | 478.0 |
| 1989 | 371.73 | 545.0 | 478.0 |
| 1990 | 373.73 | 545.0 | 478.0 |
| 1991 | 376.72 | 545.0 | 478.0 |
| 1992 | 378.37 | 545.0 | 478.0 |
| 1993 | 379.86 | 545.0 | 478.0 |
| 1994 | 382.4 | 545.0 | 478.0 |
| 1995 | 385.36 | 545.0 | 478.0 |
| 1996 | 388.05 | 545.0 | 478.0 |
| 1997 | 389.98 | 545.0 | 478.0 |
| 1998 | 393.52 | 545.0 | 478.0 |
| 1999 | 396.72 | 545.0 | 478.0 |
| 2000 | 398.64 | 545.0 | 478.0 |
| 2001 | 400.3 | 545.0 | 478.0 |
| 2002 | 402.65 | 545.0 | 478.0 |
| 2003 | 405.67 | 545.0 | 478.0 |
| 2004 | 407.4 | 545.0 | 478.0 |
| 2005 | 410.01 | 545.0 | 478.0 |
| 2006 | 413.47 | 545.0 | 478.0 |
| 2007 | 416.55 | 545.0 | 478.0 |
| 2008 | 420.21 | 545.0 | 478.0 |
| 2009 | 422.92 | 545.0 | 478.0 |
| 2010 | 426.62 | 545.0 | 478.0 |
| 2011 | 429.97 | 545.0 | 478.0 |
| 2012 | 433.5 | 545.0 | 478.0 |
| 2013 | 437.83 | 545.0 | 478.0 |
| 2014 | 441.35 | 545.0 | 478.0 |
| 2015 | 445.04 | 545.0 | 478.0 |
| 2016 | 449.18 | 545.0 | 478.0 |