I draw a plot using ListPlot. But I noticed that PlotMarkers are 'covered' by the axes; see example below:

I was trying to use the option Method -> {"AxesInFront" -> False} but it does not help.
Below is my full code of this plot. The size of markers has to be as set.
ListPlot[{list1, list2},
PlotStyle -> Directive[AbsolutePointSize[60]],
GridLines -> Automatic,
GridLinesStyle -> Directive[Gray, Dashed],
Frame -> {True, True, False, False},
FrameLabel -> {"Number of non-zero bits", "alpha"},
Axes -> False,
LegendShadow -> None,
LegendSize -> 0.5,
PlotLegend -> {Style["exact value", FontFamily -> "Helvetica", 130],
Style["estimated value", FontFamily -> "Helvetica", 130]},
LegendPosition -> {0.10, 0.10},
PlotRange -> {0, 20},
ImageSize -> 7000,
Method -> {"AxesInFront" -> False}]
Solution suggested by evanb:
