Plot the series using a line chart. Briefly describe what you see: Is it a positive or negative

trend? Is the trend increasing? What kind of short term fluctuations do you observe?

Answer the previous question using the log-scale. Can you tell if the growth rate is increasing or

decreasing on average over the period?

To better see how the growth rate evolves through time, plot the annualized growth rate of

consumption expenditure. Describe what you see. Is it constant on average?