This article is from the New Zealand FAQ, by Phil Stuart-Jones and Lin Nah with numerous contributions by others.
Steffan Berridge has added the following.
Here's some authoritative info which I found in "Motor Accidents in New
Zealand" published by the LTSA, originally entered in the OECD
International Road and Traffic Accident Database held by Bundesanstalt fur
Strassenwesen, Germany. The data are all 1993 except the ones with *s
which are 1992 and the countries are ordered in decreasing vehicles per
capita.
Country Deaths per Deaths per
100,000 pop 10,000 vehicles
USA 15.6 2.1*
NZ 17.0 2.7
Italy 12.6 2.0
Luxembourg 19.2 3.1
Canada 12.5 2.0
Australia 11.1 1.9
Switzerland 10.5 1.8
Germany 12.3 2.2
Japan 10.6 1.9
UK 6.8 1.3
Austria 16.2 3.1
Norway 7.6 1.3*
Iceland 6.4 1.3
Sweden 7.3 1.5
Belgium 16.5 3.4
France 16.6 3.4
Spain 16.3 3.6
Finland 9.6 2.1
Netherlands 8.2 1.9
Denmark 10.8 2.7
Ireland 12.1 3.7
Greece 20.3 6.6
Turkey 14.3 -
Portugal 32.9* -
1991 1992 1993
Against the person 7,603 8,454 10,681
Property 20,669 21,166 21,459
Drug 6,930 6,652 7,949
Other 16,115 16,661 20,759
Census at 31 March 1993 1994 1995 Total Population 3,435.0 3,541.6 3592.4 <?pre> Since the only overlap is 1993, only consider that year, therefore there are 34.35 (100,000) divided into 60,848 gives a rate of 1771.412/100,000 CONVICTIONS (not crimes). Since I can't lay my hands on a conviction rate, or total of crimes committed, this will have to do. I suspect somebody fouled up, or there are vast differences in reporting methodologies from country to country, making any statistic meaningless." Bruce Hoult: "I'd take a wild stab in the dark and guess that these numbers include everything down to and including speeding tickets, and that the majority are in fact exactly that." Paul Dansted: "Because of changing attitudes towards domestic violence in NZ assaults in the home are now more likely to be reported as crimes. I think domestic violence accounts for something like 80% of violence in NZ! Policy changes have encouraged police to treat these incidents as crimes rather than 'just domestics'." Hantie Braybrook "There was a follow-up article the next day which is summarised below. Anyone interested can search the articles at the Independent Newspapers WWW site viz. http://www.inc.co.za "Essentially, the crime and murder rates could be double estimates due to the 50% rate of under-reporting. According to Nedcor researcher Simon Lee, the project used current SAPS (SA Police Service) crime statistics and statistics obtained through its own study to calculate an overall crime rate of 5,651 per 100,000 people. "Lee said that the crime rate could be doubled to at least 11,500 if the under-reporting rate were taken into consideration. This would also apply to the murder rate of 45 per 100,000 people which could in fact be 90. "Commenting on the high overall crime rate in countries such as Sweden, New Zealand and Canada, Lee said it could be attributed to the fact that these countries had a reporting rate of at least 95%. "The international rates had been obtained through Britannica World Data, which publish reliable forms of comparative crime statistics." 
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