The most up-to-date NumPy documentation can be found at Latest (development) version. It includes a user guide, full reference documentation, a developer guide, and meta information.
Other links:
Numpy 1.17 Manual
[HTML+zip]
[Reference Guide PDF]
[User Guide PDF]
Numpy 1.16 Manual
[HTML+zip]
[Reference Guide PDF]
[User Guide PDF]
Numpy 1.15 Manual
[HTML+zip]
[Reference Guide PDF]
[User Guide PDF]
Numpy 1.14 Manual
[HTML+zip]
[Reference Guide PDF]
[User Guide PDF]
Numpy 1.13 Manual
[HTML+zip]
[Reference Guide PDF]
[User Guide PDF]