He just claimed on the small party Leader's Debate that NZ was second only to South Korea in Government expenditure to GDP
Here is the OECD list:
South Korea — 31.7
Australia — 34.0
Switzerland — 34.0
Ireland — 34.7
Japan — 36.5
United States — 37.4
Luxembourg — 37.8
Canada — 38.6
Spain — 38.8
Norway — 41.0
New Zealand — 42.3
Iceland — 43.1