Constitutions differ in the range and scope of powers granted to the head of government. Some older constitutions; for example, Australia's 1900 text, and Belgium's 1830 text; do not mention their prime ministerial offices at all, the offices became a "de facto" political reality without a formal constitutional status. Some constitutions make a Prime Minister (first among equals) and that remains the practical reality for the Prime Minister of Belgium and the Prime Minister of Finland. Other states however, make their head of government a central and dominant figure within the cabinet system; Ireland's Taoiseach, for example, alone can decide when to seek a parliamentary dissolution, in contrast to other countries where this is a cabinet decision, with the Prime Minister just one member voting on the suggestion. In Israel, while the Government is nominally a collegiate body with a role for the Prime Minister, the Israeli Prime Minister is the dominant figure in the executive branch in practice. The Prime Minister of Sweden, under the 1974 Instrument of Government, is a constitutional office with all key executive powers either directly at his or her disposal or indirectly through the collegial Government, whose members are all appointed and dismissed at the Prime Minister's sole discretion.