Year	Percent
1950	9.74593
1955	12.00754
1960	13.38037
1965	11.54077
1970	8.99006
1975	8.80898
1980	8.45127
1985	8.80749
1990	8.48662
1995	6.45484
2000	5.06801
2005	5.12998
2010	5.94662
2015	6.71999
2020	6.505
2025	6.075
2030	5.56588
2035	5.38729
2040	5.671
2045	6.07058
2050	6.20461
2055	6.01055
2060	5.71301
2065	5.5542
2070	5.61033
2075	5.77957
2080	5.86363
2085	5.77969
2090	5.59632
2095	5.43753
2100	5.40629