The line graph below shows the number of single-family homes constructed in the United States by region over a period of six years. Summarize the information by selecting and reporting in the main features

The line graph below shows the number of single-family homes constructed in the United States by region over a period of six years.
Summarize the information by selecting and reporting in the main features, and make comparisons where relevant.

The provided graph gives comparative data about how many American single-family houses were built in four different areas over the course of six years starting from 2006.

A glance at the graph reveals that a significant majority of the residential constructions were in the South region, but the reverse was the case for the Northeast area. It can also be observed that most houses were built in 2006, however, all four regions witnessed a notable decline after that.

Since 2006, the South remained to be the region with most houses constructed. Over the next four years, it experienced a dramatic collapse before reaching the nadir in 2010, which was followed by a slight increase to roughly 350,000 homes two years later. On the contrary, a steady downward tendency was recorded in the Northeast region, which hit the bottom-most point at well beneath 100,000 houses in 2012.

A similar pattern can be seen for the remaining two areas. After a brief peak, the numbers in the West and Midwest regions dropped to approximately 200,000 in 2008 and continued to do so over the next two years. However, in comparison to the West, which witnessed a mild rise to about 150,000 constructions, the Midwest showed a stability in 2012.