For the past few years we've been following a couple of transportation metrics: Vehicle Miles Traveled and Gasoline Volume Sales. For both series we focus on the population adjusted data. Let's now do something similar with the Light Vehicle Sales report from the Bureau of Economic Analysis. This data series stretches back to January 1976. Since that first data point, the Civilian Noninstitutional Population Age 16 and Over (i.e., driving age not in the military or an inmate) has risen 62%.

Here is a chart, courtesy of the FRED repository, of the raw data for the seasonally adjusted annualized number of new vehicles sold domestically in the reported month. This is a quite noisy series, to be sure. The absolute average month-over-month change is 4.5%.

The latest data point is the preliminary July count published by Motor Intelligence, which shows a seasonally adjusted annual rate of 17.55 million units, a 2.6% increase from the previous month. WardsAuto puts the July number at 17.46 million.

The first chart shows the the series since 2007, which illustrates the dramatic impact of the Great Recession. The blue line smooths the volatility with a six-month moving average, which helps us visualize the trend.

Here is a the complete series data from 1976. We've added a linear regression (the red line) is added to further illustrate the direction of the long-term trend.

In the chart above, the latest moving average value is 5.1% below is record high in May 2000.

Here is the same chart with two key modifications:

The moving-average for the per-capita series peaked in February 1979. Thirty-five-plus years later, it is now down 29.1% from that August 1978 peak month.

The good news is that this adjusted metric has continued to rise from its Great Recession historic low, and it is comfortably above the linear regression. It will be interesting to see if the post-recession growth continues in the years ahead.