mostly family housing. Having children sustains culture and is good for the economy. Overall Anglo countries have enough children to be approximately sustainable. New Zealand and the United States produce a slight surplus of children, while Ireland, Australia and the UK have modest deficits. Skilled migration New Zealand has a demand for more skilled workers. There is a limited supply of highly skilled migrants available and competition between countries. Housing is one of the factors affecting migration. "Access to affordable and suitable housing is an indicator of positive settlement in society, and home ownership is an indicator of economic wellbeing and represents an intention of long-term settlement". To attract highly skilled migrants New Zealand must have desirable living conditions, otherwise they will go somewhere else, such as the United States. The United Kingdom is by far New Zealand's most important source country of skilled migrants. British studies show that only 2% of British citizens want to live in a low rise apartment, and only 1% in a high rise apartment block. The vast majority prefer to live in a house. British people are also very fond of spending time in the garden, with more than 70% claiming that it improves their quality of life, and half (48%) of whom felt it was the most enjoyable activity above watching TV (33%) and shopping (14%). A third of Brits also believe that gardens are romantic and can boost their love lives. New homes Over time Kiwi homes are becoming larger and more luxurious. While old homes were mostly box-shaped bungalows, new houses are architecturally more complex, creating houses that are more individualistic and aesthetically pleasing. Popular extras can include a rumpus room (kids playroom), walk-in wardrobes, walk-in kitchen pantries, more bedrooms and extra bathrooms. New homes have more insulation and those built in the South Island must use double glazing. By 2025 New Zealand intends to increase the share of renewable electricity production from the current 70% to over 90%. All new wood-fires are required to be very efficient and the number of homes using efficient heat pump technology is growing rapidly. “Creating more efficient houses is a triple win for New Zealanders’, our health, our environment and our power bills” (Helen Clark Prime Minister 1999–2008). The floor area of new dwellings built in New Zealand is extremely variable ranging from as little as 30 m2 for a small apartment to more