Sources for German naval spending before 1914

Which sources cover German spending on ships and naval infrastructure from 1895 to 1912?

Massie's Dreadnought and Castles of Steel are suggested, along with Oxford economic-history works and large historical-statistics reference books.

Massie's Dreadnought and Castles of Steel are suggested as starting points for German naval expenditure. Oxford economic-history publications are also recommended. Large historical-statistics volumes are described as expensive but useful reference purchases. These are research directions, with no expenditure totals for ships or infrastructure supplied.