[Nihil Obstat]

"The only significant decline is in the percentage of Catholics who contributed to diocesan financial appeals, annual campaigns that are usually run by bishops."

That might be good as well - maybe they are giving to more worthy groups. Some of the bishops will waste that money, there are better options for evangelization, like:

EWTN - https://www.ewtn.com/ewtn/ssl/donation/donation_ewtn.asp

and Aid to the Church in Need -
http://www.kirche-in-not.org/index_s.html

[Antoninus]

Some of the bishops will waste that money, there are better options for evangelization, like: EWTN

Exactly. EWTN has done more to bring new Catholics into the Church than all the American bishops combined.