Year    Gross Federal Debt ($millions) 1945    260,123 1950    256,853 1955    274,366 1960    290,525 1965    322,318 1970    380,921 1975    541,925 1980    909,050 1985    1,817,521 1990    3,206,564 1995    4,921,005 2000    5,686,338   Construct a scatter plot with this data. Do you observe a trend? If so, what type of trend do you observe? Use Excel to fit a linear trend and an exponential trend to the data. Display the models and their respective r^2.

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