You are absolutely right Salmanf1...my mom drive a 2001 Toyota Camry V-6 with 194 Horsepower. Here is wat edmunds.com had to say for the 1992 Camry..."To move the more massive Camry, bigger engines were fitted underhood. The four-cylinder engine now displaced 2.2 liters and boasted 130 horsepower. The V6 was increased to 3.0 liters and kicked out 185 horsepower, enough muscle to launch a Camry from zero to 60 mph in under 8 seconds."
And here is about the 2005 Camry..."Motivating the Camry is again the choice of four- or six-cylinder power. The proven V6 was tweaked a bit to lower emissions and qualify for ULEV status but lost a few horsepower (now rated at 192 ponies). The completely new inline four, now at 2.4 liters, pumps out 157 horsepower and 162 pound-feet of torque."
So i guess in 1992, they didnt have striicter emissions control and that is why the new camry has lower horepower.