2011 - 12.1%

The 2011 12.1% is the baseline measurement.

2012 - 15.8%

The 2012 increase to 15.8% from 2011 represents a 3.7% increase YoY.

2013 - 15.5%

The 2013 decrease to 15.5% from 2012 represents a -0.3% decrease YoY.

2014 - 13.5%

The 2014 decrease to 13.5% from 2013 represents a -2.0% decrease YoY.

2015 - 11%

The 2015 decrease to 11% from 2014 represents a -2.5% decrease YoY.

2016 - 14.9%

The 2016 increase to 14.9% from 2015 represents a 3.9% increase YoY.

2017 - 8.5%

The 2017 decrease to 8.5% from 2016 represents a -6.4% decrease YoY.

2018 - 10.1%

The 2018 increase to 10.1% from 2017 represents a 1.6% increase YoY.

2019 - 11.5%

The 2019 increase to 11.5% from 2018 represents a 1.4% increase YoY.

2021 - 10.3%

The 2021 decrease to 10.3% from 2019 represents a -1.2% decrease YoY.

2022 - 9.6%

The 2022 decrease to 9.6% from 2021 represents a -0.7% decrease YoY.

2023 - 10.7%

The 2023 increase to 10.7% from 2022 represents a 1.1% increase YoY.