Research on week 1&2

Historical wool export prices and volumes
http://www.stats.govt.nz/browse_for_stats/economic_indicators/prices_indexes/historical-wool-export-prices-volumes-2011.aspx

New Zealand's sheep population is collapsing
https://www.businessinsider.com.au/chart-new-zealands-sheep-population-is-collapsing-2015-5

The ratio of person to sheep in New Zealand has dropped
http://www.weeklytimesnow.com.au/agribusiness/sheep/the-ratio-of-person-to-sheep-in-new-zealand-has-dropped/news-story/1a6dbd5575198cb0e70ccb5c2b857f22

New Zealand sheep farming: changing influence:
https://www.sciencelearn.org.nz/resources/816-new-zealand-sheep-farming-changing-influences

Number of vehicle in New Zealand:
http://www.ehinz.ac.nz/assets/Factsheets/Released-2014/EHI8-9-NumberOfVehiclesInNZ2000-2013-released201404.pdf

Globe-wool exports by major exporting countries
http://www.yarnsandfibers.com/preferredsupplier/reports_fullstory.php?id=560

Import and export NZ
http://m.stats.govt.nz/browse_for_stats/industry_sectors/imports_and_exports.aspx

New Zealand population:
http://www.worldometers.info/world-population/new-zealand-population/

Agricultural Production Statistics: June 2011
http://www.stats.govt.nz/browse_for_stats/industry_sectors/agriculture-horticulture-forestry/AgriculturalProduction_HOTPJun11prov/Commentary.aspx