function [Y] = load_gas_usage()
% LOAD_GAS_USAGE - Loads the monthly average residential gas usage in Iowa City Jan 1971 to October 2979 ... this is data series 11
%   
% Written by:
% -- 
% John L. Weatherwax                2009-04-21
% 
% email: wax@alum.mit.edu
% 
% Please send comments and especially bug reports to the
% above email address.
% 
%-----

Y = [ 
    302 262 218 175 100  77  43  47  49  69 152 205 ;
    246 294 242 181 107  56  49  47  47  71 151 244 ;
    280 230 185 148  98  61  46  45  55  48 115 185 ;
    276 220 181 151  83  55  49  42  46  74 103 200 ;
    237 247 215 182  80  46  65  40  44  63  85 185 ;
    247 231 167 117  79  45  40  38  41  69 152 232 ;
    282 255 161 107  53  40  39  34  35  56  97 210 ;
    260 257 210 125  80  42  35  31  32  50  92 189 ;
].'; % get all the data we can in a "matrix" format ... 

Y = Y(:);

Y = [ Y; 256 ; 250 ; 198 ; 136 ; 73 ; 39 ; 32 ; 30 ; 31 ; 45 ]; % append the remaing data points ...