The majority of Maltese tax-payers in 2004, declared an income of less than Lm4,200 with a total of 74 per cent earning less than Lm6,000 a year.
On the opposite end of the scale only 3.6 per cent, declared personal incomes of more than Lm 12,000.
These statistics were presented in Parliament by the prime minister on Monday in reply to a question by Labour deputy leader Charles Mangion.
The Prime Minister also gave corresponding figures for the seven year period between 1998 and 2004.
In this period the number of those declaring under Lm4,200 decreased by 8.4 per cent.
The number of those earning between Lm4,200 and Lm6,000 registered a slight decrease of 1.5 per cent during the same timeframe.
On the other hand the number of those earning between Lm6,000 and Lm8,000 increased by 2.9 per cent.
The number of those earning more than Lm8,000 increased by 7.1 per cent over the same period while those earning Lm12,000 and more tripled from 1.3 per cent in 1998 to 3.6 in 2004.
The major leap in the number of people declaring incomes of more than Lm12,000 took place between 2001 and 2002 when the number increased by a full percentage point from 1.8 to 2.8 per cent.
Incomes remained relatively static between 2003 and 2004 with the number of those earning between Lm6,000 and Lm8,000 remaining the same.
The number of those declaring an income between Lm4,200 and Lm6,000 registered a slight increase.
The decrease of 0.9 per cent in the number of people declaring less than Lm4,200 between 2002 and 2003 was the smallest annual decrease since 1998, a possible indication of the economic slowdown which marked 2004.