In the absence of a valid agreement, the court shall presume that all marital property is to be divided equally between the parties, but may alter this distribution, without regard to any attribution of fault to either party which may be alleged or proved in the course of the action, after a consideration of the following:

(1) The extent to which each party has contributed to the acquisition, preservation and maintenance, or increase in value of marital property by monetary contributions, including, but not limited to:

(A) Employment income and other earnings; and

(B) Funds which are separate property.

(2) The extent to which each party has contributed to the acquisition, preservation and maintenance or increase in value of marital property by nonmonetary contributions, including, but not limited to:

(A) Homemaker services;

(B) Child care services;

(C) Labor performed without compensation, or for less than adequate compensation, in a family business or other business entity in which one or both of the parties has an interest;

(D) Labor performed in the actual maintenance or improvement of tangible marital property; and

(E) Labor performed in the management or investment of assets which are marital property.

(3) The extent to which each party expended his or her efforts during the marriage in a manner which limited or decreased such party's income-earning ability or increased the income-earning ability of the other party, including, but not limited to:

(A) Direct or indirect contributions by either party to the education or training of the other party which has increased the income-earning ability of such other party; and

(B) Foregoing by either party of employment or other income-earning activity through an understanding of the parties or at the insistence of the other party.

(4) The extent to which each party, during the marriage, may have conducted himself or herself so as to dissipate or depreciate the value of the marital property of the parties: Provided, That except for a consideration of the economic consequences of conduct as provided for in this subdivision, fault or marital misconduct shall not be considered by the court in determining the proper distribution of marital property.