The US unemployment rate rose to 7.6 percent in January, according to official figures, putting it at its highest level since 1992, and signaling that the recession in the worldÔÇÖs largest economy is deepening as companies are reluctant to hire. ┬á┬á Americans cut back drastically on spending at the end of last year, launching the economy into its worst relapse in a quarter-century. ┬á┬á Vanishing jobs and evaporating wealth from tanking home values, 401(k)s and other investments have forced consumers to retrench, which has required companies to pull back.