Year	Percent
1950	11.00744
1955	10.6816
1960	6.70699
1965	6.94205
1970	9.46016
1975	10.51876
1980	11.15978
1985	10.41132
1990	9.83009
1995	10.00389
2000	11.22124
2005	12.3191
2010	11.25784
2015	9.98347
2020	8.57705
2025	9.22189
2030	9.92507
2035	9.55401
2040	8.78897
2045	8.09458
2050	7.8558
2055	7.91534
2060	7.87547
2065	7.53894
2070	7.08051
2075	6.72465
2080	6.55356
2085	6.45215
2090	6.29961
2095	6.0474
2100	5.7942