Define axis characteristics.

axis1 order=(1955 to 1995 by 5) offset=(2,2)
      label=none
      major=(height=2)
     minor=(height=1)
      ;

axis2 order=(0 to 6000 by 1000) offset=(0,0)
      label=none
      major=(height=2)
     minor=(height=1)
      ;