The provided charts give information about the number of honey-bee colonies and honey production in the US between 1970 and 2010.
According to the first chart, the figures for honey-bee colonies fluctuated over the given period. It started with 4 million in 1970 before reaching its peak of approximately 4.2 million in the next 10 years. Then, it moderately dropped to 3.5 million in 1990 and continued decreasing to roughly 2.6 million 10 years later. Finally, the number of flocks of honey-bee experienced a marked drop and reached the bottom at nearly 1.8 at the end of the period.
Turning to the remaining chart, the statistics for honey produced saw a fluctuation from 1970 to 2010. In 1970, it reached its highest point at 130,000 tonnes, followed by a 10,000 tonnes drop in 1980. However, the figure slightly grew to 120,000 tonnes in 1990. Since then, the amount of honey production considerably fell in the next 20-year period and hit a low of 70000 tonnes in 2010.
Overall, both of the data trended downward over the whole period. Especially, between 1970 and 1990, the more honey-bee colonies, the less honey production, and the opposite was true.