Year,Jan.,Feb.,Mar.,Apr.,May,Jun.,Jul.,Aug.,Sept.,Oct.,Nov.,Dec.,Mean
1965,0.10,2.19,2.81,3.14,3.31,1.87,0.00,-0.54,-0.53,-0.39,0.23,0.82,1.08
1966,2.35,2.38,0.86,0.04,-1.04,-1.41,-1.83,-2.66,-2.03,-2.01,-1.17,-1.21,-0.64
1967,0.69,1.26,1.00,0.82,-0.34,-0.63,-1.79,-2.75,-3.58,-2.33,-1.53,-1.65,-0.90
1968,-0.62,0.55,-0.09,-0.33,-1.13,-2.14,-1.31,-0.93,-0.56,-0.47,-0.50,0.21,-0.61
1969,0.90,2.02,3.65,3.99,3.22,1.98,-0.99,-1.59,-1.28,-0.27,0.08,1.07,1.06
1970,1.18,1.06,0.46,0.77,-0.63,-2.55,-3.60,-3.62,-2.75,-2.31,-0.86,-1.14,-1.17
1971,0.08,1.01,1.94,2.77,0.46,-0.65,-1.12,-1.96,-2.26,-1.08,-0.65,-1.18,-0.22
1972,0.54,2.29,2.49,4.13,2.73,1.17,0.69,0.39,-0.06,-0.06,0.55,2.03,1.41
1973,3.42,2.39,1.76,-0.12,-1.71,-2.87,-2.75,-3.15,-2.96,-3.06,-1.86,-1.21,-1.01
1974,-0.49,1.55,0.71,2.25,1.45,0.31,-1.63,-2.55,-2.41,-2.65,-2.24,-2.80,-0.71
1975,-0.61,1.98,2.61,2.79,-0.05,-1.28,-1.92,-2.64,-2.88,-3.18,-3.05,-2.24,-0.87
1976,-0.28,0.62,1.43,2.54,2.92,1.83,1.03,0.40,-0.77,-0.94,0.04,0.67,0.79
1977,2.04,1.90,0.95,0.54,0.18,-0.67,-1.64,-2.73,-3.04,-1.58,-0.68,0.01,-0.39
1978,1.49,2.38,1.84,0.18,-0.65,-2.64,-2.25,-3.09,-3.44,-2.03,-1.33,-0.35,-0.83
1979,1.79,1.69,1.66,3.01,0.88,-0.21,-1.03,-1.65,-1.11,-1.12,-0.41,-0.17,0.28
1980,1.12,1.86,1.38,1.85,0.80,-0.65,-1.13,-2.44,-2.58,-1.95,-0.96,-1.00,-0.31
1981,-0.47,0.88,1.29,1.91,1.01,-0.29,-1.50,-3.32,-2.48,-2.31,-2.07,-0.27,-0.63
1982,0.70,1.81,1.82,1.37,1.71,0.67,0.24,-0.41,-0.18,0.60,2.36,3.35,1.17
1983,3.99,4.32,4.98,4.97,4.36,3.93,3.17,0.73,-1.29,-1.17,-1.14,-0.36,2.21
1984,,,,1.25,-0.45,-1.49,-1.60,-2.11,-1.82,-1.36,-0.96,-0.42,-1.00
1985,0.08,0.00,0.53,1.45,-0.93,-1.10,-1.24,-2.14,-2.44,-2.14,-1.19,-0.88,-0.83
1986,0.56,2.04,1.89,1.21,1.18,-0.62,-0.77,-1.03,-1.74,-1.33,-0.10,0.57,0.16
1987,2.26,3.79,3.90,4.37,3.01,0.84,-0.69,-0.57,-0.26,-0.48,0.02,0.32,1.38
1988,0.57,0.99,0.96,-0.90,-2.00,-3.62,-4.61,-3.75,-2.59,-3.33,-1.97,-1.48,-1.81
1989,-0.17,1.65,0.95,2.25,1.01,-0.55,-1.77,-1.42,-2.07,-1.75,-1.50,-1.36,-0.39
1990,0.36,2.67,1.49,2.59,1.64,-0.27,-1.79,-2.18,-2.11,-2.15,-0.57,-0.33,-0.05
1991,0.28,2.79,3.24,-0.14,1.64,1.12,-0.08,-1.23,-1.29,-1.03,-0.35,0.85,0.48
1992,2.23,3.94,4.21,4.81,3.25,0.07,-1.93,-2.13,-2.47,-2.05,-1.55,-0.39,0.67
1993,0.57,2.56,2.79,3.82,2.95,1.30,-0.10,-1.94,-1.92,-1.48,-0.61,-0.26,0.64
1994,1.03,1.63,-0.07,-1.25,-1.08,-0.45,-1.42,-2.23,-2.50,-1.46,-0.07,0.99,-0.57
1995,2.70,2.20,1.72,-1.15,-1.14,-1.47,-1.87,-2.89,-2.37,-2.02,-1.44,-1.60,-0.78
1996,-0.14,1.27,2.01,-0.36,-1.20,-2.23,-2.34,-2.87,-3.49,-2.60,-2.12,-2.31,-1.37
1997,-0.53,1.78,3.13,3.55,3.45,3.13,2.90,2.33,2.25,2.40,3.07,4.17,2.64
1998,4.29,4.27,4.89,4.88,3.31,2.22,-0.48,-1.59,-2.59,-2.53,-1.13,-1.94,1.13
,,,,,,,,,,,,,
Mean,0.97,1.99,1.98,1.85,0.95,-0.22,-1.09,-1.77,-1.87,-1.52,-0.75,-0.28,
,,,,,,,,,,,,,
Median,0.57,1.90,1.76,1.88,0.95,-0.50,-1.37,-2.12,-2.18,-1.66,-0.91,-0.35,