| Time of the last usage |
Have used it at some time |
Within the last 3 months |
Between 3 months and a year ago |
More than 1 year ago |
| 2006 |
45.9 |
42.6 |
2.1 |
1.2 |
| 2007 |
54.0 |
51.1 |
1.7 |
1.2 |
| 2008 |
61.7 |
57.7 |
2.4 |
1.6 |
| 2009 |
62.9 |
58.5 |
2.5 |
1.9 |
| 2010 |
66.9 |
61.3 |
3.1 |
2.5 |
| 2011 |
71.4 |
67.3 |
2.3 |
1.8 |
| 2012 |
73.9 |
70.3 |
1.8 |
1.8 |
| 2013 |
75.6 |
72.4 |
1.7 |
1.5 |
| 2014 |
77.9 |
75.7 |
1.3 |
1.0 |
| 2015 |
78.8 |
72.8 |
3.1 |
2.9 |
| 2016 |
81.1 |
79.3 |
1.4 |
0.5 |
| 2017 |
83.0 |
76.8 |
2.6 |
3.6 |
| 2018 |
83.9 |
76.1 |
3.4 |
4.4 |
| 2019 |
85.8 |
80.4 |
2.3 |
3.0 |
| 2020 |
87.5 |
84.8 |
1.3 |
1.4 |
| 2021 |
90.1 |
88.6 |
0.5 |
0.9 |
| 2022 |
90.5 |
89.1 |
0.6 |
0.8 |
| 2023 |
92.5 |
91.5 |
0.4 |
0.7 |
| 2024 |
94.7 |
93.8 |
0.3 |
0.6 |
.