Load the dataset/instruments

The dataset consists of 465 observations on two variables, x_1,t = c_t / c_{t − 1} and x_2,t = r_t+1/p_t.
The variable c_t indicates the level of consumption on period t, r_t indicates the period t payoff from a unit of the market portfolio
purchased in period t-1, and p_t is the price of the market portfolio at time t. The market portfolio consists of all the
stocks traded on the New York Stock Exchange, weighted by their relative value.
The instruments used are: a constant, x1,t − 1, x1,t − 2, x2,t − 1, x2,t − 2

The dataset and instruments used for the estimation were already provided to you with the GMM toolbox; hence, the only thing we have to do is to load this variables into Matlab's workspace. To do that, enter the following commands:
>> x = load('cbapmvwrdata.dat');
>> z = load('cbapmvwrinstr.dat');
Once these variables are succesfully created in the workspace, enter
>> gmmgui
to begin the program.