2011 - 11.4%

The 2011 11.4% is the baseline measurement.

2012 - 9.3%

The 2012 decrease to 9.3% from 2011 represents a -2.1% decrease YoY.

2013 - 9.2%

The 2013 decrease to 9.2% from 2012 represents a -0.1% decrease YoY.

2014 - 9.3%

The 2014 increase to 9.3% from 2013 represents a 0.1% increase YoY.

2015 - 8.9%

The 2015 decrease to 8.9% from 2014 represents a -0.4% decrease YoY.

2016 - 8.5%

The 2016 decrease to 8.5% from 2015 represents a -0.4% decrease YoY.

2017 - 7.4%

The 2017 decrease to 7.4% from 2016 represents a -1.1% decrease YoY.

2018 - 7.8%

The 2018 increase to 7.8% from 2017 represents a 0.4% increase YoY.

2019 - 7.1%

The 2019 decrease to 7.1% from 2018 represents a -0.7% decrease YoY.

2021 - 8.4%

The 2021 increase to 8.4% from 2019 represents a 1.3% increase YoY.

2022 - 8%

The 2022 decrease to 8% from 2021 represents a -0.4% decrease YoY.

2023 - 8.1%

The 2023 increase to 8.1% from 2022 represents a 0.1% increase YoY.