2011 - 13.1%

The 2011 13.1% is the baseline measurement.

2012 - 12.9%

The 2012 decrease to 12.9% from 2011 represents a -0.2% decrease YoY.

2013 - 11.1%

The 2013 decrease to 11.1% from 2012 represents a -1.8% decrease YoY.

2014 - 12.1%

The 2014 increase to 12.1% from 2013 represents a 1.0% increase YoY.

2015 - 10.8%

The 2015 decrease to 10.8% from 2014 represents a -1.3% decrease YoY.

2016 - 11.4%

The 2016 increase to 11.4% from 2015 represents a 0.6% increase YoY.

2017 - 10.7%

The 2017 decrease to 10.7% from 2016 represents a -0.7% decrease YoY.

2018 - 9.9%

The 2018 decrease to 9.9% from 2017 represents a -0.8% decrease YoY.

2019 - 8.5%

The 2019 decrease to 8.5% from 2018 represents a -1.4% decrease YoY.

2021 - 9.6%

The 2021 increase to 9.6% from 2019 represents a 1.1% increase YoY.

2022 - 8.3%

The 2022 decrease to 8.3% from 2021 represents a -1.3% decrease YoY.

2023 - 7%

The 2023 decrease to 7% from 2022 represents a -1.3% decrease YoY.