9 May 2022

3.2c p/unit

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9 November 2021

2.3c p/unit

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10 May 2021

2.8c p/unit

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9 November 2020

2.7c p/unit

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11 May 2020

3.7c p/unit

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8 November 2019

2.5c p/unit

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8 May 2019
3.0c p/unit

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9 November 2018
3.1c p/unit

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8 May 2018
3.1c p/unit

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6 November 2017
3.5c p/unit

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8 May 2017
2.25c p/unit

​