Which one is correct?

[cleung]

Please tell me which one of the following two is correct. Thank you.

1. For sales of this month, New York Office and L. A. Office reported an increase of $50,000 and $80,000, respectively.

1. For sales of this month, New York Office and L. A. Office reported increases of $50,000 and $80,000, respectively.

[Anglika]

Please tell me which one of the following two is correct. Thank you.

1. For sales of this month, New York Office and L. A. Office reported an increase of $50,000 and $80,000, respectively.

1. For sales of this month, New York Office and L. A. Office reported increases of $50,000 and $80,000, respectively.

You can say either reported an increase...respectively or reported increases...respectively. However, you need the in front of New York and LA, and office need not be capitalized. I would have phrased this as follows:

On this month's sales, the New York and LA offices reported increases of $50,000 and $80,000 respectively