Claim: President Trump says he built the greatest ever US economy prior to the coronavirus outbreak.

He claims to have generated historic economic growth, record low unemployment, and lifted millions of Americans out of poverty - and he says he will do it all again if re-elected.

Reality Check verdict: It's true the economy was doing well prior to the pandemic - continuing a trend which began during the Obama administration - but there have been periods when it was much stronger.

The US economy has now been hit by the biggest economic contraction ever recorded and the highest unemployment rate in more than 80 years.

We've looked at the economy in six key charts.

During his first three years in office, President Trump oversaw an annual average growth of 2.5%.

The last three years of the Obama administration saw a similar level of growth (2.3%) along with a significantly higher figure (5.5%) in mid-2014.

But the coronavirus outbreak earlier this year has triggered the sharpest contraction since records began.

In the second quarter of 2020 - accounting for April, May and June - the economy contracted by over 30%. That's more than three times greater than the 10% fall in 1958.

If we look at growth rates as far back as comparable records allow, it's clear there have been frequent periods when the growth of GDP - the value of goods and services in the economy - has been significantly higher than under President Trump.

In the early 1950s, for example, annualised GDP growth rate periodically exceeded 10%.

President Trump often highlights the rising value of US financial markets as a measure of success - in particular the Dow Jones Industrial Average.

The Dow is a measure of the performance of 30 large companies listed on US stock exchanges, and it reached record highs at the start of this year.

It then crashed as markets reacted to the coronavirus pandemic, wiping out all the gains made since President Trump took office.

But the financial markets have been remarkably resilient and they've now largely recovered back to near pre-pandemic levels.

Prior to the pandemic, President Trump claims to have delivered the lowest unemployment rate in half a century.

This is true. In February this year, the rate stood at 3.5%, the lowest for more than 50 years.

However, the Obama administration added more jobs to the economy, comparing similar time-frames.

Under Trump, in the three years prior to the pandemic, there were an additional 6.4 million jobs. In the last three years under Obama, seven million jobs were added.

As in many parts of the world, coronavirus lockdown measures very quickly led to soaring levels of unemployment in the US.

The rate jumped to 14.7% in April, the highest level since the Great Depression of the 1930s.

The US Labor Department says more than 20 million people lost their jobs, eliminating a decade of employment gains in a single month.

Since the peak in April, unemployment has fallen back significantly to 8.4% in August.

Real wages (adjusted for inflation) grew throughout Trump's first three years in office - continuing a steady upward trend which began during the first of President Obama's two terms.

This growth reached 2.1% per annum in February 2019, prior to the pandemic.

This is lower than the real wage increases of up to 2.4% that President Obama oversaw in 2015

The rapid increase in average earnings then seen at the start of the coronavirus lockdown were largely as a consequence of the lowest-earning Americans losing their jobs at a disproportionate rate, following the economic downturn.

With lower wage-earners out of jobs, the average hourly wage data skewed sharply upwards.

Average wages have since started to fall back, as economic restrictions have eased.

President Trump claimed in 2019 that he had delivered "the largest poverty reduction under any president in history".

In 2019, around 4.2 million fewer people were living in poverty in the US compared with the previous year, according to official data.

This is a significant drop, but not the largest reduction in history.

The US Census Bureau has published this poverty data since the end of the 1950s. The largest fall in a single year was in 1966 during the administration of President Lyndon B Johnson, when almost 4.7 million people were lifted out of poverty.

The financial crisis of 2007/8 and subsequent economic downturn saw sharp rises in poverty, which only began to decline from around 2015 during the Obama administration, with a growing economy and rising levels of employment.

Image copyright Getty Images Image caption Food banks in the US face continued demand as unemployment due to the pandemic persists.

The continued strength of the economy under President Trump (at least until the pandemic hit) has been matched by a continuing fall in the poverty rate.

This overall national figure masks wide variations across regions and ethnic groups in America. In 2019, while 10.5% of the population was defined as living in poverty, the figure for black Americans was 18.8 and for white (non-Hispanic) Americans it was 7.3%.

Figures for 2020 are not yet available, but are expected to show a sharp rise in poverty as a result of the pandemic.

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