2011 - 19%

The 2011 19% is the baseline measurement.

2012 - 20.2%

The 2012 increase to 20.2% from 2011 represents a 1.2% increase YoY.

2013 - 18.4%

The 2013 decrease to 18.4% from 2012 represents a -1.8% decrease YoY.

2014 - 18.6%

The 2014 increase to 18.6% from 2013 represents a 0.2% increase YoY.

2015 - 18.5%

The 2015 decrease to 18.5% from 2014 represents a -0.1% decrease YoY.

2016 - 19.3%

The 2016 increase to 19.3% from 2015 represents a 0.8% increase YoY.

2017 - 16.6%

The 2017 decrease to 16.6% from 2016 represents a -2.7% decrease YoY.

2018 - 17.2%

The 2018 increase to 17.2% from 2017 represents a 0.6% increase YoY.

2019 - 15.9%

The 2019 decrease to 15.9% from 2018 represents a -1.3% decrease YoY.

2021 - 14.4%

The 2021 decrease to 14.4% from 2019 represents a -1.5% decrease YoY.

2022 - 19.5%

The 2022 increase to 19.5% from 2021 represents a 5.1% increase YoY.

2023 - 13.7%

The 2023 decrease to 13.7% from 2022 represents a -5.8% decrease YoY.