set size 0.6, 0.5
set key
set title "Copies of Weekly JUMP"
set xlabel "Year"
set ylabel "M Copies"
set format y "%3.2f"
set grid
set terminal png
set output "jump.png"
set xrange [1968:2006]
plot "jump.dat" using 1:($2/1000000) title "" with linespoints