The following year it was upgraded to a full district.

On May 21, 1990 it was upgraded to a full district.

It was upgraded to become a full district in 1963.

It was upgraded to a full district on May 21 1990.

It was elevated to a full district on 1 January 1986.

It was upgraded to a full district on May 26 1989.

They were put together and upgraded to a full district in 1904.

The area was upgraded to a full district on May 1, 1950.

It was upgraded to a full district on May 9 1992.

On December 11 1959 it was elevated to a full district.