The following two graphs give you a plot of the United States aggregate unemployment rate for the sample period 1962:I to 1999:IV, and the (log)level of real United States GDP for the sample period 1962:I to 1995:IV. You want test for stationarity in both cases. Indicate whether or not you should include a time trend in your Augmented Dickey-Fuller test and why. 
Definitions:
Lactic Acid
A natural organic acid present in milk and produced in the muscles during intense activity.
Blood Ph
A measure of the acidity or alkalinity of the blood, typically maintaining around 7.35 to 7.45, making it slightly basic.
Hydrogen Ions
Positively charged ions (H+) that form when a hydrogen atom loses its electron, crucial in acid-base chemistry.
Muscle Cramps
Involuntary and sudden contractions of a muscle or muscles, often causing pain and discomfort.
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