(c) Any other factor which the court deems relevant in making a just and equitable disposition of that property.
As used in this subsection, "contribution" includes, without limitation, a down payment, a payment for the acquisition or improvement of property, and a payment reducing the principal of a loan used to finance the purchase or improvement of property. The term does not include a payment of interest on a loan used to finance the purchase or improvement of property, or a payment made for maintenance, insurance or taxes on property.