Two thirds of all adults in Ireland (62%) play lotto on a regular basis.
According to the National Lottery figures for 2013, 23 new millionaires were created during the past year - winning a combined total 382.7 million euro.
However, the state company says sales were down last year by 6.8 per cent - from over 735 million in 2012 to over 685 million in 2013.
A lack of significant jackpot rolls on both of the main draw games is being blamed for the decrease.
But the sales generated over 205 million euro for charities last year - bringing the overall level of funds raised since the launch of the National Lottery to 4.4 billion.
