Year,Value,Japan (Country),Temp,Jun-Aug,(°C)
1940,20.268
1941,19.604
1942,21.241
1943,20.63
1944,21.291
1945,19.896
1946,21.405
1947,20.123
1948,20.819
1949,20.174
1950,21.169
1951,20.634
1952,20.382
1953,20.74
1954,19.777
1955,22.1
1956,20.488
1957,20.532
1958,21.095
1959,21.03
1960,21.379
1961,22.004
1962,21.154
1963,21.336
1964,21.312
1965,20.386
1966,20.27
1967,21.64
1968,20.822
1969,20.689
1970,20.984
1971,20.988
1972,21.246
1973,21.546
1974,20.705
1975,21.348
1976,20.26
1977,20.917
1978,22.695
1979,21.343
1980,20.359
1981,21.009
1982,20.537
1983,20.472
1984,22.271
1985,21.45
1986,20.725
1987,21.441
1988,20.844
1989,20.881
1990,22.333
1991,21.619
1992,20.88
1993,19.809
1994,22.691
1995,21.404
1996,21.175
1997,21.395
1998,21.303
1999,22.017
2000,22.246
2001,21.764
2002,21.531
2003,20.53
2004,22.256
2005,22.005
2006,21.75
2007,21.698
2008,21.543
2009,21.292
2010,23.021
2011,22.264
2012,21.972
2013,22.507
2014,21.895
2015,21.649
2016,22.124
2017,21.942
2018,22.518
2019,21.858
2020,22.423
2021,22.45
2022,22.644
2023,23.645
2024,23.57
2025,23.912