SEASON	MAX (x10^4km^2)
1970-71	116.82 
1971-72	130.63 
1972-73	131.60 
1973-74	118.29 
1974-75	120.33 
1975-76	120.30 
1976-77	132.77 
1977-78	152.25 
1978-79	145.30 
1979-80	144.69 
1980-81	127.86 
1981-82	127.34 
1982-83	137.67 
1983-84	85.81 
1984-85	122.52 
1985-86	125.06 
1986-87	124.25 
1987-88	144.05 
1988-89	118.85 
1989-90	118.59 
1990-91	94.24 
1991-92	114.67 
1992-93	120.55 
1993-94	112.21 
1994-95	103.30 
1995-96	104.52 
1996-97	103.91 
1997-98	125.65 
1998-99	124.29 
1999-00	136.54 
2000-01	151.67 
2001-02	128.58 
2002-03	125.49 
2003-04	112.69 
2004-05	93.92 
2005-06	93.09 
2006-07	109.97 
2007-08	113.48 
2008-09	112.12 
2009-10	114.20 
2010-11	97.32 
2011-12	115.04 
2012-13	109.92 
2013-14	103.55 
2014-15	70.26 
2015-16	119.27 
2016-17	96.04 
2017-18	115.19 
2018-19	122.52 
2019-20	108.39 
2020-21	117.63 
2021-22	80.68 
2022-23	107.26 
2023-24	120.68