Year	Percent
1950	8.18592
1955	8.102
1960	7.88586
1965	7.97076
1970	7.65913
1975	7.74626
1980	8.29532
1985	9.05001
1990	9.39814
1995	9.7953
2000	10.2638
2005	10.54981
2010	10.26128
2015	9.60774
2020	9.22818
2025	9.64923
2030	10.23052
2035	9.85048
2040	9.1404
2045	8.6251
2050	8.30446
2055	8.11645
2060	7.94676
2065	7.72611
2070	7.43084
2075	7.1139
2080	6.84215
2085	6.63045
2090	6.458
2095	6.28363
2100	6.11042