The latest issue of the NFIB Small Business Economic Trends came out this morning. The headline number for August came in at 108.8, up 0.9 from the previous month and its highest of all time. The index is at the 100th percentile in this series. Today’s number came in above the Investing.com forecast of 108.2.

Here is an excerpt from the opening summary of the news release.

The NFIB Small Business Optimism Index soared to 108.8 in August, a new record in the survey’s 45-year history, topping the July 1983 highwater mark of 108. The record-breaking figure is driven by small business owners executing on the plans they’ve put in place due to dramatic changes in the nation’s economic policy.

“Today’s groundbreaking numbers are demonstrative of what I’m hearing everyday from small business owners – that business is booming. As the tax and regulatory landscape changed, so did small business expectations and plans,” said NFIB President and CEO Juanita D. Duggan.“We’re now seeing the tangible results of those plans as small businesses report historically high, some record breaking, levels of increased sales, investment, earnings, and hiring.”

The first chart below highlights the 1986 baseline level of 100 and includes some labels to help us visualize that dramatic change in small-business sentiment that accompanied the Great Financial Crisis. Compare, for example, the relative resilience of the index during the 2000-2003 collapse of the Tech Bubble with the far weaker readings following the Great Recession that ended in June 2009.

Here is a closer look at the indicator since the turn of the century. We are now at a post-recession high.

The average monthly change in this indicator is 3.0 points. To smooth out the noise of volatility, here is a 3-month moving average of the Optimism Index along with the monthly values, shown as dots.