_{S 5}

6. Engel's Law suggests that as income iiicreases, the proportion of that income spent on food decreases and the proportion spent on luxuries increases. Along the border has the percentage of total sales accounted for by food decreased since 1990? Data Appendix 2 Border Retail Data Brownsville Brownsville McAllen McAllen Year Grocery Stores Gross Retail Sales Grocery Stores Gross Retail Sales 1990 $163,372,594 $756,333,755 $148,348,334 $1,236,516,129 1991 $176,632,858 $846,367,566 $159,705,537 $1,448,441,965 1992 $193,973,677 $901,092,780 $175,631,843 $1,626,394,635 1993 $218,360,679 $971,219,399 $186,481,180 $1,720,150,722 1994 $218,368,785 $1,008,565,023 $197,903,488 $1,795,348,317 1995 $190,065,426 $808,380,914 $178,840,512 $1,492,418,058 1996 $194,621,340 $868,466,443 $188,977,713 $1,626,010,313 1997 $198,052,820 $932,160,844 $189,344,148 $1,645,098,203 1998 $204,393,770 $990,177,858 $181,889,362 $1,737,570,639 1999 $222,024,882 $1,089,288,443 $176,103,059 $1,961,461,537 2000 $245,836,986 $1,219,932,651 $196,230,471 $2,177,571,232 Laredo Laredo El Paso Year Grocery Stores El Paso Gross Retail Sales Grocery Stores 1990 $195,153,371 Gross Retail Sales $1,463,764,577 $608,744,561 1991 $218,207,089 $3,342,464,941 $1,664,946,817 $618,630,183 1992 $269,264,764 $3,500,955,001 $1,855,870,106 $703,513,620 1993 $272,912,601 $3,849,250,174 $1,900,524,130 $713,611,220 1994 $286,953,297 $4,078,474,519 $1,868,147,108 $697,172,349 1995 $242,781,346 $4,381,221,216 $1,245,868,449 $647,970,993 1996 $251,668,408 $4,249,291,267 $1,361,477,995 $656,538,009 1997 $261,804,570 $4,634,074,914 $1,541,188,742 $654,826,400 1998 $274,524,476 $4,418,173,882 $1,677,287,219 $628,821,391 1999 $293,309,736 $4,662,496,226 $1,841,482,166 $585,380,543 2000 $310,410,116 $5,211,381,859 $2,224,633,201 $596,018,147 $5,567,149,280