Year	Percent
1950	9.80242
1955	8.45065
1960	6.87612
1965	7.93946
1970	7.38913
1975	8.38388
1980	7.89742
1985	7.61309
1990	7.57615
1995	5.93441
2000	7.37625
2005	5.91359
2010	5.77469
2015	5.04799
2020	5.0424
2025	5.63355
2030	5.85199
2035	5.84712
2040	5.29506
2045	5.02899
2050	5.03336
2055	5.12614
2060	5.23661
2065	5.2444
2070	5.12948
2075	4.99201
2080	4.93272
2085	4.95001
2090	4.98825
2095	4.99329
2100	4.9542