(Stuff) - The amount of bulk wine exported by New Zealand wineries increased to about 35 per cent of all exports last year, but the amount of bulk wine flowing out of the country appears to be slowing, New Zealand Winegrowers says. Kiwi wineries exported 168.1 million litres last year, earning $1.089 billion, NZ Winegrowers export figures show. That was 7 per cent more wine than 2010 However, the earnings rose only 4 per cent which meant the average per litre price for Kiwi wine fell about 20 cents to $6.24. In 2006, the average price was $9.44.