Line

A line chart is the most common chart type used overall and is used to display continuous data trends precisely.

This line chart below displays the trend of the NASA budget as a percentage of the US Federal budget from 1958 to 2021.

Pros:

Cons:

•
It can be challenging to read exact values at specific points. A tooltip is highly recommended to overcome this challenge.
•
A line chart can be easily cluttered with a large number of series

You can easily highlight specific events on a line chart using plot lines and annotations.