2011 - 23.8%

The 2011 23.8% is the baseline measurement.

2012 - 21.7%

The 2012 decrease to 21.7% from 2011 represents a -2.1% decrease YoY.

2013 - 22.1%

The 2013 increase to 22.1% from 2012 represents a 0.4% increase YoY.

2014 - 23.8%

The 2014 increase to 23.8% from 2013 represents a 1.7% increase YoY.

2015 - 22.3%

The 2015 decrease to 22.3% from 2014 represents a -1.5% decrease YoY.

2016 - 19.3%

The 2016 decrease to 19.3% from 2015 represents a -3.0% decrease YoY.

2017 - 18.2%

The 2017 decrease to 18.2% from 2016 represents a -1.1% decrease YoY.

2018 - 21.4%

The 2018 increase to 21.4% from 2017 represents a 3.2% increase YoY.

2019 - 21.9%

The 2019 increase to 21.9% from 2018 represents a 0.5% increase YoY.

2021 - 15.7%

The 2021 decrease to 15.7% from 2019 represents a -6.2% decrease YoY.

2022 - 19.1%

The 2022 increase to 19.1% from 2021 represents a 3.4% increase YoY.

2023 - 18.1%

The 2023 decrease to 18.1% from 2022 represents a -1.0% decrease YoY.