The data below is in a format known as tab-delimited values. You can open this file with any spreadsheet application and the data will be distributed into the appropriate rows and columns. 

Year	Primary sector (%)	Secondary sector (%)	Tertiary sector (%)
1920	29.8	25.6	
1930	26.2	30.3	
1940	26.1	29.7	44.7
1950	26	28.2	45.8
1960	22.3	29	48.7
1970	16	28.2	55.8
1980	15.2	27.9	56.9
1990	13.2	23.4	62.9
2000	12	20.5	67.4
2005	7.5	18.5	74

Source: Brian Easton, In stormy seas: the post-war New Zealand economy. Dunedin: Otago University Press, 1997, p. 140

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