Year,Value,ValueRank 1940,16.796,16 1941,16.848,3 1942,16.937,1 1943,16.807,14 1944,16.829,6 1945,16.851,2 1946,16.848,4 1947,16.809,13 1948,16.828,7 1949,16.722,33 1950,16.837,5 1951,16.776,21 1952,16.812,11 1953,16.764,22 1954,16.809,12 1955,16.785,18 1956,16.814,10 1957,16.748,24 1958,16.742,27 1959,16.799,15 1960,16.82,9 1961,16.783,20 1962,16.821,8 1963,16.787,17 1964,16.601,67 1965,16.683,44 1966,16.74,28 1967,16.711,35 1968,16.676,45 1969,16.614,65 1970,16.75,23 1971,16.735,30 1972,16.784,19 1973,16.539,81 1974,16.594,74 1975,16.622,61 1976,16.63,59 1977,16.63,58 1978,16.719,34 1979,16.683,43 1980,16.701,38 1981,16.697,40 1982,16.56,78 1983,16.475,84 1984,16.599,70 1985,16.596,72 1986,16.667,48 1987,16.698,39 1988,16.684,42 1989,16.737,29 1990,16.621,62 1991,16.633,56 1992,16.417,86 1993,16.747,25 1994,16.702,37 1995,16.67,47 1996,16.599,71 1997,16.671,46 1998,16.589,75 1999,16.726,31 2000,16.743,26 2001,16.693,41 2002,16.664,50 2003,16.705,36 2004,16.558,79 2005,16.619,63 2006,16.624,60 2007,16.601,68 2008,16.724,32 2009,16.638,54 2010,16.577,77 2011,16.633,55 2012,16.611,66 2013,16.589,76 2014,16.6,69 2015,16.541,80 2016,16.438,85 2017,16.618,64 2018,16.595,73 2019,16.665,49 2020,16.496,83 2021,16.632,57 2022,16.641,53 2023,16.659,51 2024,16.524,82 2025,16.651,52 Variable: Solar Energy Domain: Global Month(s): Mar Average of all values: 16.685 Normal Period: 1991 to 2020 Normal Value = 16.623 Megajoules per sq m Trend Begin Value = 16.81 Megajoules per sq m Trend End Value = 16.561 Megajoules per sq m Total Trend (Change) = -0.249 Megajoules per sq m Total Trend (Change) per Decade = -0.029 Megajoules per sq m Trend Statistical Sig. (M-K Test): Decreasing Trend P-value (M-K Test): 0.0