Count Number Of Equal Cells With A Prefix In Col D And Insert Count In Col A?

I need to count the number of equal cells in col D beginning at the top of the column. The counted cells must begin with a text prefix of "Category:" without the quotes.

Some but not all of the cells in col D begin with a prefix of "Category:" without the quotes, followed by a word or words following the word "Category:" See examples below. All of the terms prefixed with "Category:" in col D are in alphabetical order. I need to count the number of identical cells in col D with the "Category:" prefix.

Examples of the contents of cells in col D with the "Category:" prefix are as follows:

Category: Adversity
Category: Answers
Category: Assurance
Category: Blessings
Category: Build
Category: Change
Category: Children
Category: Choices

Cells above and below cells with a prefix of "Category:" in col D are not adjacent.Cells above and below cells with a prefix of "Category:" in col D are separated by 3 to an undermined number of rows.

I need to count the number of equal cells in col D and insert the count in col A at the last equal term. For example, col A above would have 93, 1, 1, 5, 10, 8, 3, and 12 inserted into col A.