2011 - 21.8%

The 2011 21.8% is the baseline measurement.

2012 - 21.6%

The 2012 decrease to 21.6% from 2011 represents a -0.2% decrease YoY.

2013 - 17.8%

The 2013 decrease to 17.8% from 2012 represents a -3.8% decrease YoY.

2014 - 22.4%

The 2014 increase to 22.4% from 2013 represents a 4.6% increase YoY.

2015 - 20.5%

The 2015 decrease to 20.5% from 2014 represents a -1.9% decrease YoY.

2016 - 18%

The 2016 decrease to 18% from 2015 represents a -2.5% decrease YoY.

2017 - 18.3%

The 2017 increase to 18.3% from 2016 represents a 0.3% increase YoY.

2018 - 19.6%

The 2018 increase to 19.6% from 2017 represents a 1.3% increase YoY.

2019 - 21.4%

The 2019 increase to 21.4% from 2018 represents a 1.8% increase YoY.

2021 - 16.9%

The 2021 decrease to 16.9% from 2019 represents a -4.5% decrease YoY.

2022 - 13.2%

The 2022 decrease to 13.2% from 2021 represents a -3.7% decrease YoY.

2023 - 15%

The 2023 increase to 15% from 2022 represents a 1.8% increase YoY.