2011 - 12.2%

The 2011 12.2% is the baseline measurement.

2012 - 7.8%

The 2012 decrease to 7.8% from 2011 represents a -4.4% decrease YoY.

2013 - 7.9%

The 2013 increase to 7.9% from 2012 represents a 0.1% increase YoY.

2014 - 8.6%

The 2014 increase to 8.6% from 2013 represents a 0.7% increase YoY.

2015 - 7.3%

The 2015 decrease to 7.3% from 2014 represents a -1.3% decrease YoY.

2016 - 8.1%

The 2016 increase to 8.1% from 2015 represents a 0.8% increase YoY.

2017 - 8.9%

The 2017 increase to 8.9% from 2016 represents a 0.8% increase YoY.

2018 - 9.9%

The 2018 increase to 9.9% from 2017 represents a 1.0% increase YoY.

2019 - 7.8%

The 2019 decrease to 7.8% from 2018 represents a -2.1% decrease YoY.

2021 - 9.3%

The 2021 increase to 9.3% from 2019 represents a 1.5% increase YoY.

2022 - 8.6%

The 2022 decrease to 8.6% from 2021 represents a -0.7% decrease YoY.

2023 - 8.7%

The 2023 increase to 8.7% from 2022 represents a 0.1% increase YoY.