Year,Value,New Zealand (Country),Temp,Apr,(°C)
1940,9.138
1941,8.137
1942,9.801
1943,9.776
1944,10.072
1945,8.399
1946,9.145
1947,9.454
1948,8.375
1949,8.177
1950,9.56
1951,9.494
1952,10.455
1953,10.201
1954,9.649
1955,11.577
1956,13.398
1957,11.424
1958,9.518
1959,10.65
1960,10.488
1961,10.326
1962,10.572
1963,8.915
1964,10.136
1965,9.691
1966,10.458
1967,10.718
1968,10.237
1969,9.677
1970,11.709
1971,11.332
1972,11.207
1973,11.023
1974,11.466
1975,11.546
1976,11.211
1977,10.56
1978,13.023
1979,10.79
1980,10.893
1981,12.117
1982,9.8
1983,10.648
1984,10.951
1985,11.27
1986,11.943
1987,10.933
1988,9.981
1989,11.302
1990,11.694
1991,9.958
1992,9.023
1993,9.741
1994,10.943
1995,12.21
1996,11.591
1997,9.835
1998,11.373
1999,10.899
2000,11.228
2001,11.159
2002,10.921
2003,10.623
2004,9.807
2005,10.449
2006,12.121
2007,10.547
2008,11.354
2009,11.054
2010,11.671
2011,10.689
2012,11.391
2013,11.671
2014,12.05
2015,11.425
2016,11.882
2017,11.821
2018,10.835
2019,10.703
2020,11.211
2021,11.696
2022,12.038
2023,12.157
2024,11.443
2025,12.703