Year	Number
1995	14.17126
1996	11.86068
1997	15.75813
1998	22.54901
1999	17.04719
2000	18.99633
2001	22.25316
2002	19.78371
2003	19.49796
2004	19.86891
2005	20.98732
2006	19.4939