### Question
Can you define what net productivity rate means?


### Answer
**Net productivity rate** is defined as the following in *16 U.S.C. § 1362*:

> the annual per capita rate of increase in a stock resulting from additions due to reproduction, less losses due to mortality

#### Citation:
  - *16 U.S.C. § 1362*
  - Heading: **CHAPTER 31-MARINE MAMMAL PROTECTION > SUBCHAPTER I-GENERALLY**

