2011 - 15.3%

The 2011 15.3% is the baseline measurement.

2012 - 12.2%

The 2012 decrease to 12.2% from 2011 represents a -3.1% decrease YoY.

2013 - 17%

The 2013 increase to 17% from 2012 represents a 4.8% increase YoY.

2014 - 13.2%

The 2014 decrease to 13.2% from 2013 represents a -3.8% decrease YoY.

2015 - 15.4%

The 2015 increase to 15.4% from 2014 represents a 2.2% increase YoY.

2016 - 13.1%

The 2016 decrease to 13.1% from 2015 represents a -2.3% decrease YoY.

2017 - 12.9%

The 2017 decrease to 12.9% from 2016 represents a -0.2% decrease YoY.

2018 - 15.6%

The 2018 increase to 15.6% from 2017 represents a 2.7% increase YoY.

2019 - 11.1%

The 2019 decrease to 11.1% from 2018 represents a -4.5% decrease YoY.

2021 - 13.8%

The 2021 increase to 13.8% from 2019 represents a 2.7% increase YoY.

2022 - 11.5%

The 2022 decrease to 11.5% from 2021 represents a -2.3% decrease YoY.

2023 - 11.5%

The 2023 decrease to 11.5% from 2022 represents a 0.0% decrease YoY.